What version of TellMeWhen are you using?
8.6.6

What steps will reproduce the problem?
Just play some arenas/skirms.

What do you expect to happen? What happens instead?
I expected to avoid lua errors but recently I started getting different lua errors with following huge fps drops which were captured by Bugger + Bugsack addons.

List of errors:

1. https://pastebin.com/9gdPUrk7
2. https://pastebin.com/75DtTnea
3. https://pastebin.com/H18x7WSg
4. https://pastebin.com/7YD9qRjm

Attached my TMW config just in case.
TellMeWhen.zip

One more lua error in arena again https://pastebin.com/2XWmDevJ. Please help.

Thanks for including your config. In this case, I think you've just stretched TMW way past its limit.

My guess is that you have some huge chains of counter dependencies between conditions and notifications that are ultimately forming some sort of loop.

Well everything was fine until recently. I need that many counters to track 2 charges of bop and survival instincts. I couldn't find a better solution yet but anyway it works somehow. Thank you for answer I'll take a closer look at counters.