With the addon enabled, I'm getting lag spikes of about .5 seconds every 10-15 seconds.
This might be related to #15, but I don't know what they used to debug to find the cause.
This happens both in open world, dungeons and raids, where it is highly problematic.

Without TTT:
https://gyazo.com/34139ea9bc62157a599e0b80f0e3a2a6

With TTT (First spike after 15s, after enabling addon):
https://gyazo.com/06baf3d23718621a57cbb40aa26c483d

Happens significantly less with Clickable Export Strings option disabled, but it is still present

The addon does some amount of work for every chat message it finds, most of that is now disabled by default (with an option to re-enable it again)