Hi,

pareto optimal writes:
> Using =emacs -Q= to tangle org files with more than over 100 
> noweb-refs gets slow fast.
I can reproduce the slow down with my config. The culprit is
~org-element--cache-verify-element~. Significantly decreasing
=org-element--cache-self-verify-frequency= yields a 5x speedup.

Perhaps the frequency of the second
: (< (random 1000) (* 1000 org-element--cache-self-verify-frequency))
call in ~org-element--cache-verify-element~ should be decreased.

Regards,

-- 
Sébastien Miquel