Hello,

I have just one headline and do a simple property search (prop1="blah1") 
for the 'org-agenda', but this takes about 10 seconds! 
--- FILE: ----
* empty item but with a long logbook
:PROPERTIES:
:prop1: blah1
:END:
:LOGBOOK:
CLOCK: [2022-03-12 Sat 05:05]--[2022-03-12 Sat 05:24] => 0:19
CLOCK: [2022-03-11 Fri 20:50]--[2022-03-11 Fri 21:20] => 0:30
CLOCK: [2022-03-11 Fri 17:13]--[2022-03-11 Fri 17:25] => 0:12
CLOCK: [2022-03-11 Fri 06:10]--[2022-03-11 Fri 06:30] => 0:20
CLOCK: [2022-03-10 Thu 23:14]--[2022-03-11 Fri 00:25] => 1:11
CLOCK: [2022-03-10 Thu 16:45]--[2022-03-10 Thu 17:07] => 0:22
CLOCK: [2022-03-10 Thu 05:19]--[2022-03-10 Thu 06:30] => 1:11
CLOCK: [2022-03-09 Wed 22:29]--[2022-03-09 Wed 22:35] => 0:06
CLOCK: [2022-03-09 Wed 16:45]--[2022-03-09 Wed 17:01] => 0:16
CLOCK: [2022-03-12 Sat 05:05]--[2022-03-12 Sat 05:24] => 0:19
CLOCK: [2022-03-11 Fri 20:50]--[2022-03-11 Fri 21:20] => 0:30
CLOCK: [2022-03-11 Fri 17:13]--[2022-03-11 Fri 17:25] => 0:12
CLOCK: [2022-03-11 Fri 06:10]--[2022-03-11 Fri 06:30] => 0:20
CLOCK: [2022-03-10 Thu 23:14]--[2022-03-11 Fri 00:25] => 1:11
CLOCK: [2022-03-10 Thu 16:45]--[2022-03-10 Thu 17:07] => 0:22
CLOCK: [2022-03-10 Thu 05:19]--[2022-03-10 Thu 06:30] => 1:11
CLOCK: [2022-03-09 Wed 22:29]--[2022-03-09 Wed 22:35] => 0:06
CLOCK: [2022-03-09 Wed 16:45]--[2022-03-09 Wed 17:01] => 0:16
CLOCK: [2022-03-09 Wed 05:20]--[2022-03-09 Wed 06:30] => 1:10
CLOCK: [2022-03-08 Tue 22:15]--[2022-03-08 Tue 22:30] => 0:15
CLOCK: [2022-03-08 Tue 16:10]--[2022-03-08 Tue 16:23] => 0:13
CLOCK: [2022-03-12 Sat 05:25]--[2022-03-12 Sat 06:40] => 1:15
CLOCK: [2022-03-12 Sat 05:10]--[2022-03-12 Sat 05:24] => 0:14
CLOCK: [2022-03-11 Fri 20:45]--[2022-03-11 Fri 21:25] => 0:40
CLOCK: [2022-03-11 Fri 16:00]--[2022-03-11 Fri 16:30] => 0:30
CLOCK: [2022-03-11 Fri 06:05]--[2022-03-11 Fri 06:40] => 0:35
CLOCK: [2022-03-12 Sat 06:38]--[2022-03-12 Sat 06:40] => 0:02
CLOCK: [2022-03-12 Sat 05:05]--[2022-03-12 Sat 05:24] => 0:19
CLOCK: [2022-03-11 Fri 20:50]--[2022-03-11 Fri 21:20] => 0:30
CLOCK: [2022-03-11 Fri 17:13]--[2022-03-11 Fri 17:25] => 0:12
CLOCK: [2022-03-11 Fri 06:10]--[2022-03-11 Fri 06:30] => 0:20
CLOCK: [2022-03-10 Thu 23:14]--[2022-03-11 Fri 00:25] => 1:11
CLOCK: [2022-03-10 Thu 16:45]--[2022-03-10 Thu 17:07] => 0:22
CLOCK: [2022-03-10 Thu 05:19]--[2022-03-10 Thu 06:30] => 1:11
CLOCK: [2022-03-09 Wed 22:29]--[2022-03-09 Wed 22:35] => 0:06
CLOCK: [2022-03-09 Wed 16:45]--[2022-03-09 Wed 17:01] => 0:16
CLOCK: [2022-03-09 Wed 05:20]--[2022-03-09 Wed 06:30] => 1:10
CLOCK: [2022-03-08 Tue 22:15]--[2022-03-08 Tue 22:30] => 0:15
CLOCK: [2022-03-08 Tue 16:10]--[2022-03-08 Tue 16:23] => 0:13
CLOCK: [2022-03-12 Sat 05:25]--[2022-03-12 Sat 06:40] => 1:15
CLOCK: [2022-03-12 Sat 05:05]--[2022-03-12 Sat 05:24] => 0:19
CLOCK: [2022-03-11 Fri 20:50]--[2022-03-11 Fri 21:20] => 0:30
CLOCK: [2022-03-11 Fri 17:13]--[2022-03-11 Fri 17:25] => 0:12
CLOCK: [2022-03-11 Fri 06:10]--[2022-03-11 Fri 06:30] => 0:20
CLOCK: [2022-03-10 Thu 23:14]--[2022-03-11 Fri 00:25] => 1:11
CLOCK: [2022-03-10 Thu 16:45]--[2022-03-10 Thu 21:07] => 4:22
CLOCK: [2022-03-10 Thu 05:19]--[2022-03-10 Thu 06:30] => 1:11
CLOCK: [2022-03-09 Wed 22:29]--[2022-03-09 Wed 22:35] => 0:06
CLOCK: [2022-03-09 Wed 16:45]--[2022-03-09 Wed 17:01] => 0:16
CLOCK: [2022-03-09 Wed 05:20]--[2022-03-09 Wed 06:30] => 1:10
CLOCK: [2022-03-08 Tue 22:15]--[2022-03-08 Tue 22:30] => 0:15
CLOCK: [2022-03-08 Tue 16:10]--[2022-03-08 Tue 16:23] => 0:13
CLOCK: [2022-03-12 Sat 05:25]--[2022-03-12 Sat 06:40] => 1:15
CLOCK: [2022-03-12 Sat 05:10]--[2022-03-12 Sat 05:24] => 0:14
CLOCK: [2022-03-11 Fri 20:45]--[2022-03-11 Fri 21:25] => 0:40
CLOCK: [2022-03-11 Fri 16:00]--[2022-03-11 Fri 16:30] => 0:30
CLOCK: [2022-03-11 Fri 06:05]--[2022-03-11 Fri 06:40] => 0:35
CLOCK: [2022-03-12 Sat 06:38]--[2022-03-12 Sat 06:38] => 0:00
CLOCK: [2022-03-12 Sat 05:05]--[2022-03-12 Sat 05:24] => 0:19
CLOCK: [2022-03-11 Fri 20:50]--[2022-03-11 Fri 21:20] => 0:30
CLOCK: [2022-03-11 Fri 17:13]--[2022-03-11 Fri 17:25] => 0:12
CLOCK: [2022-03-11 Fri 06:10]--[2022-03-11 Fri 06:30] => 0:20
CLOCK: [2022-03-10 Thu 23:14]--[2022-03-11 Fri 00:25] => 1:11
CLOCK: [2022-03-10 Thu 16:45]--[2022-03-10 Thu 17:07] => 0:22
CLOCK: [2022-03-10 Thu 05:19]--[2022-03-10 Thu 06:30] => 1:11
CLOCK: [2022-03-09 Wed 22:29]--[2022-03-09 Wed 22:35] => 0:06
CLOCK: [2022-03-09 Wed 16:45]--[2022-03-09 Wed 17:01] => 0:16
CLOCK: [2022-03-09 Wed 05:20]--[2022-03-09 Wed 06:30] => 1:10
CLOCK: [2022-03-08 Tue 22:15]--[2022-03-08 Tue 22:30] => 0:15
CLOCK: [2022-03-08 Tue 16:10]--[2022-03-08 Tue 16:23] => 0:13
CLOCK: [2022-03-12 Sat 05:25]--[2022-03-12 Sat 06:40] => 1:15
CLOCK: [2022-03-12 Sat 05:05]--[2022-03-12 Sat 05:24] => 0:19
CLOCK: [2022-03-11 Fri 20:50]--[2022-03-11 Fri 21:20] => 0:30
CLOCK: [2022-03-11 Fri 17:13]--[2022-03-11 Fri 17:25] => 0:12
CLOCK: [2022-03-11 Fri 06:10]--[2022-03-11 Fri 06:30] => 0:20
CLOCK: [2022-03-10 Thu 23:14]--[2022-03-11 Fri 00:25] => 1:11
CLOCK: [2022-03-10 Thu 16:45]--[2022-03-10 Thu 17:07] => 0:22
CLOCK: [2022-03-10 Thu 05:19]--[2022-03-10 Thu 06:30] => 1:11
CLOCK: [2022-03-09 Wed 22:29]--[2022-03-09 Wed 22:35] => 0:06
CLOCK: [2022-03-09 Wed 16:45]--[2022-03-09 Wed 17:01] => 0:16
CLOCK: [2022-03-09 Wed 05:20]--[2022-03-09 Wed 06:30] => 1:10
CLOCK: [2022-03-08 Tue 22:15]--[2022-03-08 Tue 22:30] => 0:15
CLOCK: [2022-03-08 Tue 16:10]--[2022-03-08 Tue 16:23] => 0:13
CLOCK: [2022-03-12 Sat 05:25]--[2022-03-12 Sat 06:40] => 1:15
CLOCK: [2022-03-12 Sat 05:10]--[2022-03-12 Sat 05:24] => 0:14
CLOCK: [2022-03-11 Fri 20:45]--[2022-03-11 Fri 21:25] => 0:40
CLOCK: [2022-03-11 Fri 16:00]--[2022-03-11 Fri 16:30] => 0:30
CLOCK: [2022-03-11 Fri 06:05]--[2022-03-11 Fri 06:40] => 0:35
CLOCK: [2022-03-12 Sat 06:38]--[2022-03-12 Sat 06:38] => 0:00
CLOCK: [2022-03-12 Sat 05:05]--[2022-03-12 Sat 05:24] => 0:19
CLOCK: [2022-03-11 Fri 20:50]--[2022-03-11 Fri 21:20] => 0:30
CLOCK: [2022-03-11 Fri 17:13]--[2022-03-11 Fri 17:25] => 0:12
CLOCK: [2022-03-11 Fri 06:10]--[2022-03-11 Fri 06:30] => 0:20
CLOCK: [2022-03-10 Thu 23:14]--[2022-03-11 Fri 00:25] => 1:11
CLOCK: [2022-03-10 Thu 16:45]--[2022-03-10 Thu 17:07] => 0:22
CLOCK: [2022-03-10 Thu 05:19]--[2022-03-10 Thu 06:30] => 1:11
CLOCK: [2022-03-09 Wed 22:29]--[2022-03-09 Wed 22:35] => 0:06
CLOCK: [2022-03-09 Wed 16:45]--[2022-03-09 Wed 17:01] => 0:16
CLOCK: [2022-03-09 Wed 05:20]--[2022-03-09 Wed 06:30] => 1:10
CLOCK: [2022-03-08 Tue 22:15]--[2022-03-08 Tue 22:30] => 0:15
CLOCK: [2022-03-08 Tue 16:10]--[2022-03-08 Tue 16:23] => 0:13
CLOCK: [2022-03-12 Sat 05:25]--[2022-03-12 Sat 06:40] => 1:15
CLOCK: [2022-03-12 Sat 05:05]--[2022-03-12 Sat 05:24] => 0:19
CLOCK: [2022-03-11 Fri 20:50]--[2022-03-11 Fri 21:20] => 0:30
CLOCK: [2022-03-11 Fri 17:13]--[2022-03-11 Fri 17:25] => 0:12
CLOCK: [2022-03-11 Fri 06:10]--[2022-03-11 Fri 06:30] => 0:20
CLOCK: [2022-03-10 Thu 23:14]--[2022-03-11 Fri 00:25] => 1:11
CLOCK: [2022-03-10 Thu 16:45]--[2022-03-10 Thu 17:07] => 0:22
CLOCK: [2022-03-10 Thu 05:19]--[2022-03-10 Thu 06:30] => 1:11
CLOCK: [2022-03-09 Wed 22:29]--[2022-03-09 Wed 22:35] => 0:06
CLOCK: [2022-03-09 Wed 16:45]--[2022-03-09 Wed 17:01] => 0:16
CLOCK: [2022-03-09 Wed 05:20]--[2022-03-09 Wed 06:30] => 1:10
CLOCK: [2022-03-08 Tue 22:15]--[2022-03-08 Tue 22:30] => 0:15
CLOCK: [2022-03-08 Tue 16:10]--[2022-03-08 Tue 16:23] => 0:13
CLOCK: [2022-03-12 Sat 05:25]--[2022-03-12 Sat 06:40] => 1:15
CLOCK: [2022-03-12 Sat 05:10]--[2022-03-12 Sat 05:24] => 0:14
CLOCK: [2022-03-11 Fri 20:45]--[2022-03-11 Fri 21:25] => 0:40
CLOCK: [2022-03-11 Fri 16:00]--[2022-03-11 Fri 16:30] => 0:30
CLOCK: [2022-03-11 Fri 06:05]--[2022-03-11 Fri 06:40] => 0:35
CLOCK: [2022-03-12 Sat 06:38]--[2022-03-12 Sat 06:38] => 0:00
CLOCK: [2022-03-12 Sat 05:05]--[2022-03-12 Sat 05:24] => 0:19
CLOCK: [2022-03-11 Fri 20:50]--[2022-03-11 Fri 21:20] => 0:30
CLOCK: [2022-03-11 Fri 17:13]--[2022-03-11 Fri 17:25] => 0:12
CLOCK: [2022-03-11 Fri 06:10]--[2022-03-11 Fri 06:30] => 0:20
CLOCK: [2022-03-10 Thu 23:14]--[2022-03-11 Fri 00:25] => 1:11
CLOCK: [2022-03-10 Thu 16:45]--[2022-03-10 Thu 17:07] => 0:22
CLOCK: [2022-03-10 Thu 05:19]--[2022-03-10 Thu 06:30] => 1:11
CLOCK: [2022-03-09 Wed 22:29]--[2022-03-09 Wed 22:35] => 0:06
CLOCK: [2022-03-09 Wed 16:45]--[2022-03-09 Wed 17:01] => 0:16
CLOCK: [2022-03-09 Wed 05:20]--[2022-03-09 Wed 06:30] => 1:10
CLOCK: [2022-03-08 Tue 22:15]--[2022-03-08 Tue 22:30] => 0:15
CLOCK: [2022-03-08 Tue 16:10]--[2022-03-08 Tue 16:23] => 0:13
CLOCK: [2022-03-12 Sat 05:25]--[2022-03-12 Sat 06:40] => 1:15
CLOCK: [2022-03-12 Sat 05:10]--[2022-03-12 Sat 05:24] => 0:14
CLOCK: [2022-03-11 Fri 20:45]--[2022-03-11 Fri 21:25] => 0:40
CLOCK: [2022-03-11 Fri 16:00]--[2022-03-11 Fri 16:30] => 0:30
CLOCK: [2022-03-11 Fri 06:05]--[2022-03-11 Fri 06:40] => 0:35
CLOCK: [2022-03-12 Sat 06:38]--[2022-03-12 Sat 06:38] => 0:00
CLOCK: [2022-03-12 Sat 05:05]--[2022-03-12 Sat 05:24] => 0:19
CLOCK: [2022-03-11 Fri 20:50]--[2022-03-11 Fri 21:20] => 0:30
CLOCK: [2022-03-12 Sat 05:05]--[2022-03-12 Sat 05:24] => 0:19
CLOCK: [2022-03-11 Fri 20:50]--[2022-03-11 Fri 21:20] => 0:30
CLOCK: [2022-03-11 Fri 17:13]--[2022-03-11 Fri 17:25] => 0:12
CLOCK: [2022-03-11 Fri 06:10]--[2022-03-11 Fri 06:30] => 0:20
CLOCK: [2022-03-10 Thu 23:14]--[2022-03-11 Fri 00:25] => 1:11
CLOCK: [2022-03-10 Thu 16:45]--[2022-03-10 Thu 17:07] => 0:22
CLOCK: [2022-03-10 Thu 05:19]--[2022-03-10 Thu 06:30] => 1:11
CLOCK: [2022-03-09 Wed 22:29]--[2022-03-09 Wed 22:35] => 0:06
CLOCK: [2022-03-09 Wed 16:45]--[2022-03-09 Wed 17:01] => 0:16
CLOCK: [2022-03-09 Wed 05:20]--[2022-03-09 Wed 06:30] => 1:10
CLOCK: [2022-03-08 Tue 22:15]--[2022-03-08 Tue 22:30] => 0:15
CLOCK: [2022-03-08 Tue 16:10]--[2022-03-08 Tue 16:23] => 0:13
CLOCK: [2022-03-12 Sat 05:25]--[2022-03-12 Sat 06:40] => 1:15
CLOCK: [2022-03-12 Sat 05:10]--[2022-03-12 Sat 05:24] => 0:14
CLOCK: [2022-03-11 Fri 20:45]--[2022-03-11 Fri 21:25] => 0:40
CLOCK: [2022-03-11 Fri 16:00]--[2022-03-11 Fri 16:30] => 0:30
CLOCK: [2022-03-11 Fri 06:05]--[2022-03-11 Fri 06:40] => 0:35
CLOCK: [2022-03-12 Sat 06:38]--[2022-03-12 Sat 06:38] => 0:00
CLOCK: [2022-03-12 Sat 05:05]--[2022-03-12 Sat 05:24] => 0:19
CLOCK: [2022-03-11 Fri 20:50]--[2022-03-11 Fri 21:20] => 0:30
CLOCK: [2022-03-11 Fri 17:13]--[2022-03-11 Fri 17:25] => 0:12
CLOCK: [2022-03-11 Fri 06:10]--[2022-03-11 Fri 06:30] => 0:20
CLOCK: [2022-03-12 Sat 06:38]--[2022-03-12 Sat 06:38] => 0:00
CLOCK: [2022-03-12 Sat 05:05]--[2022-03-12 Sat 05:24] => 0:19
CLOCK: [2022-03-11 Fri 20:50]--[2022-03-11 Fri 21:20] => 0:30
CLOCK: [2022-03-11 Fri 17:13]--[2022-03-11 Fri 17:25] => 0:12
CLOCK: [2022-03-11 Fri 06:10]--[2022-03-11 Fri 06:30] => 0:20
CLOCK: [2022-03-10 Thu 23:14]--[2022-03-11 Fri 00:25] => 1:11
CLOCK: [2022-03-10 Thu 16:45]--[2022-03-10 Thu 17:07] => 0:22
CLOCK: [2022-03-10 Thu 05:19]--[2022-03-10 Thu 06:30] => 1:11
CLOCK: [2022-03-09 Wed 22:29]--[2022-03-09 Wed 22:35] => 0:06
CLOCK: [2022-03-09 Wed 16:45]--[2022-03-09 Wed 17:01] => 0:16
CLOCK: [2022-03-09 Wed 05:20]--[2022-03-09 Wed 06:30] => 1:10
CLOCK: [2022-03-08 Tue 22:15]--[2022-03-08 Tue 22:30] => 0:15
CLOCK: [2022-03-08 Tue 16:10]--[2022-03-08 Tue 16:23] => 0:13
CLOCK: [2022-03-12 Sat 05:25]--[2022-03-12 Sat 06:40] => 1:15
CLOCK: [2022-03-12 Sat 05:10]--[2022-03-12 Sat 05:24] => 0:14
CLOCK: [2022-03-11 Fri 20:45]--[2022-03-11 Fri 21:25] => 0:40
CLOCK: [2022-03-11 Fri 16:00]--[2022-03-11 Fri 16:30] => 0:30
CLOCK: [2022-03-11 Fri 06:05]--[2022-03-11 Fri 06:40] => 0:35
CLOCK: [2022-03-12 Sat 06:38]--[2022-03-12 Sat 06:38] => 0:00
CLOCK: [2022-03-12 Sat 05:05]--[2022-03-12 Sat 05:24] => 0:19
CLOCK: [2022-03-11 Fri 20:50]--[2022-03-11 Fri 21:20] => 0:30
CLOCK: [2022-03-11 Fri 17:13]--[2022-03-11 Fri 17:25] => 0:12
CLOCK: [2022-03-11 Fri 06:10]--[2022-03-11 Fri 06:30] => 0:20
CLOCK: [2022-03-10 Thu 23:14]--[2022-03-11 Fri 00:25] => 1:11
CLOCK: [2022-03-10 Thu 16:45]--[2022-03-10 Thu 17:07] => 0:22
CLOCK: [2022-03-10 Thu 05:19]--[2022-03-10 Thu 06:30] => 1:11
CLOCK: [2022-03-09 Wed 22:29]--[2022-03-09 Wed 22:35] => 0:06
CLOCK: [2022-03-09 Wed 16:45]--[2022-03-09 Wed 17:01] => 0:16
CLOCK: [2022-03-09 Wed 05:20]--[2022-03-09 Wed 06:30] => 1:10
CLOCK: [2022-03-08 Tue 22:15]--[2022-03-08 Tue 22:30] => 0:15
CLOCK: [2022-03-08 Tue 16:10]--[2022-03-08 Tue 16:23] => 0:13
CLOCK: [2022-03-12 Sat 05:25]--[2022-03-12 Sat 06:40] => 1:15
CLOCK: [2022-03-12 Sat 05:10]--[2022-03-12 Sat 05:24] => 0:14
CLOCK: [2022-03-11 Fri 20:45]--[2022-03-11 Fri 21:25] => 0:40
CLOCK: [2022-03-11 Fri 16:00]--[2022-03-11 Fri 16:30] => 0:30
CLOCK: [2022-03-11 Fri 06:05]--[2022-03-11 Fri 06:40] => 0:35
CLOCK: [2022-03-11 Fri 06:10]--[2022-03-11 Fri 06:30] => 0:20
CLOCK: [2022-03-10 Thu 23:14]--[2022-03-11 Fri 00:25] => 1:11
CLOCK: [2022-03-10 Thu 16:45]--[2022-03-10 Thu 17:07] => 0:22
CLOCK: [2022-03-10 Thu 05:19]--[2022-03-10 Thu 06:30] => 1:11
CLOCK: [2022-03-09 Wed 22:29]--[2022-03-09 Wed 22:35] => 0:06
CLOCK: [2022-03-09 Wed 16:45]--[2022-03-09 Wed 17:01] => 0:16
CLOCK: [2022-03-09 Wed 05:20]--[2022-03-09 Wed 06:30] => 1:10
CLOCK: [2022-03-08 Tue 22:15]--[2022-03-08 Tue 22:30] => 0:15
CLOCK: [2022-03-08 Tue 16:10]--[2022-03-08 Tue 16:23] => 0:13
CLOCK: [2022-03-12 Sat 05:25]--[2022-03-12 Sat 06:40] => 1:15
CLOCK: [2022-03-12 Sat 05:10]--[2022-03-12 Sat 05:24] => 0:14
CLOCK: [2022-03-11 Fri 20:45]--[2022-03-11 Fri 21:25] => 0:40
CLOCK: [2022-03-11 Fri 16:00]--[2022-03-11 Fri 16:30] => 0:30
CLOCK: [2022-03-11 Fri 06:05]--[2022-03-11 Fri 06:40] => 0:35
CLOCK: [2022-03-11 Fri 06:10]--[2022-03-11 Fri 06:30] => 0:20
CLOCK: [2022-03-10 Thu 23:14]--[2022-03-11 Fri 00:25] => 1:11
CLOCK: [2022-03-10 Thu 16:45]--[2022-03-10 Thu 17:07] => 0:22
CLOCK: [2022-03-10 Thu 05:19]--[2022-03-10 Thu 06:30] => 1:11
CLOCK: [2022-03-09 Wed 22:29]--[2022-03-09 Wed 22:35] => 0:06
CLOCK: [2022-03-09 Wed 16:45]--[2022-03-09 Wed 17:01] => 0:16
CLOCK: [2022-03-09 Wed 05:20]--[2022-03-09 Wed 06:30] => 1:10
CLOCK: [2022-03-08 Tue 22:15]--[2022-03-08 Tue 22:30] => 0:15
CLOCK: [2022-03-08 Tue 16:10]--[2022-03-08 Tue 16:23] => 0:13
CLOCK: [2022-03-12 Sat 05:25]--[2022-03-12 Sat 06:40] => 1:15
CLOCK: [2022-03-12 Sat 05:10]--[2022-03-12 Sat 05:24] => 0:14
CLOCK: [2022-03-11 Fri 20:45]--[2022-03-11 Fri 21:25] => 0:40
CLOCK: [2022-03-11 Fri 16:00]--[2022-03-11 Fri 16:30] => 0:30
CLOCK: [2022-03-11 Fri 06:05]--[2022-03-11 Fri 06:40] => 0:35
CLOCK: [2022-03-11 Fri 06:10]--[2022-03-11 Fri 06:30] => 0:20
CLOCK: [2022-03-10 Thu 23:14]--[2022-03-11 Fri 00:25] => 1:11
CLOCK: [2022-03-10 Thu 16:45]--[2022-03-10 Thu 17:07] => 0:22
CLOCK: [2022-03-10 Thu 05:19]--[2022-03-10 Thu 06:30] => 1:11
CLOCK: [2022-03-09 Wed 22:29]--[2022-03-09 Wed 22:35] => 0:06
CLOCK: [2022-03-09 Wed 16:45]--[2022-03-09 Wed 17:01] => 0:16
CLOCK: [2022-03-09 Wed 05:20]--[2022-03-09 Wed 06:30] => 1:10
CLOCK: [2022-03-08 Tue 22:15]--[2022-03-08 Tue 22:30] => 0:15
CLOCK: [2022-03-08 Tue 16:10]--[2022-03-08 Tue 16:23] => 0:13
CLOCK: [2022-03-12 Sat 05:25]--[2022-03-12 Sat 06:40] => 1:15
CLOCK: [2022-03-12 Sat 05:10]--[2022-03-12 Sat 05:24] => 0:14
CLOCK: [2022-03-11 Fri 20:45]--[2022-03-11 Fri 21:25] => 0:40
CLOCK: [2022-03-11 Fri 16:00]--[2022-03-11 Fri 16:30] => 0:30
CLOCK: [2022-03-11 Fri 06:05]--[2022-03-11 Fri 06:40] => 0:35
CLOCK: [2022-03-11 Fri 06:10]--[2022-03-11 Fri 06:30] => 0:20
CLOCK: [2022-03-10 Thu 23:14]--[2022-03-11 Fri 00:25] => 1:11
CLOCK: [2022-03-10 Thu 16:45]--[2022-03-10 Thu 17:07] => 0:22
CLOCK: [2022-03-10 Thu 05:19]--[2022-03-10 Thu 06:30] => 1:11
CLOCK: [2022-03-09 Wed 22:29]--[2022-03-09 Wed 22:35] => 0:06
CLOCK: [2022-03-09 Wed 16:45]--[2022-03-09 Wed 17:01] => 0:16
CLOCK: [2022-03-09 Wed 05:20]--[2022-03-09 Wed 06:30] => 1:10
CLOCK: [2022-03-08 Tue 22:15]--[2022-03-08 Tue 22:30] => 0:15
CLOCK: [2022-03-08 Tue 16:10]--[2022-03-08 Tue 16:23] => 0:13
CLOCK: [2022-03-12 Sat 05:25]--[2022-03-12 Sat 06:40] => 1:15
CLOCK: [2022-03-12 Sat 05:10]--[2022-03-12 Sat 05:24] => 0:14
CLOCK: [2022-03-11 Fri 20:45]--[2022-03-11 Fri 21:25] => 0:40
CLOCK: [2022-03-11 Fri 16:00]--[2022-03-11 Fri 16:30] => 0:30
CLOCK: [2022-03-11 Fri 06:05]--[2022-03-11 Fri 06:40] => 0:35
CLOCK: [2022-03-11 Fri 16:00]--[2022-03-11 Fri 16:30] => 0:30
CLOCK: [2022-03-11 Fri 06:05]--[2022-03-11 Fri 06:40] => 0:35
CLOCK: [2022-03-11 Fri 06:10]--[2022-03-11 Fri 06:30] => 0:20
CLOCK: [2022-03-10 Thu 23:14]--[2022-03-11 Fri 00:25] => 1:11
CLOCK: [2022-03-10 Thu 16:45]--[2022-03-10 Thu 17:07] => 0:22
CLOCK: [2022-03-10 Thu 05:19]--[2022-03-10 Thu 06:30] => 1:11
CLOCK: [2022-03-09 Wed 22:29]--[2022-03-09 Wed 22:35] => 0:06
CLOCK: [2022-03-09 Wed 16:45]--[2022-03-09 Wed 17:01] => 0:16
CLOCK: [2022-03-09 Wed 05:20]--[2022-03-09 Wed 06:30] => 1:10
CLOCK: [2022-03-08 Tue 22:15]--[2022-03-08 Tue 22:30] => 0:15
CLOCK: [2022-03-08 Tue 16:10]--[2022-03-08 Tue 16:23] => 0:13
CLOCK: [2022-03-12 Sat 05:25]--[2022-03-12 Sat 06:40] => 1:15
CLOCK: [2022-03-12 Sat 05:10]--[2022-03-12 Sat 05:24] => 0:14
CLOCK: [2022-03-11 Fri 20:45]--[2022-03-11 Fri 21:25] => 0:40
CLOCK: [2022-03-11 Fri 16:00]--[2022-03-11 Fri 16:30] => 0:30
CLOCK: [2022-03-11 Fri 06:05]--[2022-03-11 Fri 06:40] => 0:35
CLOCK: [2022-03-08 Tue 22:15]--[2022-03-08 Tue 22:30] => 0:15
CLOCK: [2022-03-08 Tue 16:10]--[2022-03-08 Tue 16:23] => 0:13
CLOCK: [2022-03-12 Sat 05:25]--[2022-03-12 Sat 06:40] => 1:15
CLOCK: [2022-03-12 Sat 05:10]--[2022-03-12 Sat 05:24] => 0:14
CLOCK: [2022-03-11 Fri 20:45]--[2022-03-11 Fri 21:25] => 0:40
CLOCK: [2022-03-11 Fri 16:00]--[2022-03-11 Fri 16:30] => 0:30
CLOCK: [2022-03-11 Fri 06:05]--[2022-03-11 Fri 06:40] => 0:35
CLOCK: [2022-03-11 Fri 16:00]--[2022-03-11 Fri 16:30] => 0:30
CLOCK: [2022-03-11 Fri 06:05]--[2022-03-11 Fri 06:40] => 0:35
CLOCK: [2022-03-11 Fri 06:10]--[2022-03-11 Fri 06:30] => 0:20
CLOCK: [2022-03-10 Thu 23:14]--[2022-03-11 Fri 00:25] => 1:11
CLOCK: [2022-03-10 Thu 16:45]--[2022-03-10 Thu 17:07] => 0:22
CLOCK: [2022-03-10 Thu 05:19]--[2022-03-10 Thu 06:30] => 1:11
CLOCK: [2022-03-09 Wed 22:29]--[2022-03-09 Wed 22:35] => 0:06
CLOCK: [2022-03-09 Wed 16:45]--[2022-03-09 Wed 17:01] => 0:16
CLOCK: [2022-03-09 Wed 05:20]--[2022-03-09 Wed 06:30] => 1:10
CLOCK: [2022-03-08 Tue 22:15]--[2022-03-08 Tue 22:30] => 0:15
CLOCK: [2022-03-08 Tue 16:10]--[2022-03-08 Tue 16:23] => 0:13
CLOCK: [2022-03-12 Sat 05:25]--[2022-03-12 Sat 06:40] => 1:15
CLOCK: [2022-03-12 Sat 05:10]--[2022-03-12 Sat 05:24] => 0:14
CLOCK: [2022-03-11 Fri 20:45]--[2022-03-11 Fri 21:25] => 0:40
CLOCK: [2022-03-11 Fri 16:00]--[2022-03-11 Fri 16:30] => 0:30
CLOCK: [2022-03-11 Fri 06:05]--[2022-03-11 Fri 06:40] => 0:35
:END:
----- EOF -----
- Without the long LOGBOOK (about 300 lines) the search is as expected 
fast. But this shouldn't be a problem at all. Emacs doesn't need to know 
the LOGBOOK drawer for the search(?).
- A tag search isn't slow.
- I've tested it with the latest org-version (9.5) and emacs-version 
(27.2), and with a clean 'init.el'.
 

Best regards
Frank