Description of the Bug

Various Rat mod items seem to be causing client-side memory leaks. This has been tested across several computers and seems to be consistent for the latest build. Two items we have confirmed so far, are the Plague Doctor's Mask and its upgraded counterpart the Black Death Mask. The majority of the items seem to be alright and the Plague Doctor and Black Death Mob do not affect the server.

After acquiring the item, the client issues seem to progress until CPU usage maximizes on the individual computers and the game becomes unplayable. This does not seem to have a currently measurable upper limit. (I can only test up to 4.5gb) This has not resulted in a crash report as of yet, as the whole computer quickly becomes frozen. A few theories include a memory leak, but PC memory usage remains stable at about 3-4gb and does not hit the allocated limit. I worry that it may be an issue with client and server communication that is contributing to the CPU usage, but I haven't been able to prove the cause.

Is there any way to enlist others to try and replicate this? I will do what I can to provide details in the next few days, but when I have checked the crash folder it has been empty.

Expected Behaviour

1. Log into Server
2. Spawn plague doctor mask
3. Wait 5-10 minutes. Observe CPU usage.
4. Crash

Modpack Version

1.3.8.1 Lite

Screenshots

No response

Log

No response

Extra Info

This happens on both modified and non-modified clients.

This is a known problem and i just forgot to fix it for 1.3.8, it plagued the full version for a long while.
It doesn't just happen with hats from Rats, though those are a notable thing it occurs with.
set the spellcastingAnimations config option in config/ebwizardry/ebwizardry.cfg to false to fix it.