Hi! I've just recently installed this mod as a compliment to a playthrough I'd like to try, and it seems to have started causing some issues for my game. I've tested the rest of the mods in my modlist, and been able to determine that it is in fact this mod causing the issue.

Upon starting a new game, or loading an old game, the game seems to freeze for about half a second every time a second passes. This only happens when the game is unpaused for some reason! I truly have no idea what could be causing this issue, as I'm playing in 1.2, and the other documented problem with freezing was only for 1.3.

Demonstration video of the problem:
https://www.youtube.com/watch?v=yywdJ1QO64o

I've run a few tests, which had the following results:

{
Test:
Starting a new colony (regardless of whether or not you have anthro pawns in your colony) with the mod installed
Result:
Jittering

Test:
Reloading an old colony that had the mod installed
Result:
Jittering

Test:
Reloading an old colony that didn't have the mod installed, and allowing the faction to respawn through Vanilla Framework
Result:
No Jittering

Test:
Recruiting an anthro pawn in an old colony that didn't have the mod installed
Result:
No Jittering
}

Obviously while the last test shows some promise in terms of being able to play the game with this mod installed, it doesn't allow me to continue on with the playthrough that I had in mind.

When I first installed the mod and started the game, I did not experience the jittering issue, but after every subsequent time I've started a colony with the mod installed the issue has persisted. I've updated all of my files to the most recent versions, and I've even tried applying the 1.3 fix despite playing on 1.2.

Having looked at the Logs, I did notice it spitting out a series of lines like this, in yellow:

{
Replaced verb RimWorld.Verb_MeleeAttackDamage/Thing_Anthro19122_0_Smash; may have been changed through a version update or a mod change
Replaced verb RimWorld.Verb_MeleeAttackDamage/Thing_Anthro19122_1_Smash; may have been changed through a version update or a mod change
Replaced verb RimWorld.Verb_MeleeAttackDamage/Thing_Anthro19122_2_Bite; may have been changed through a version update or a mod change
Replaced verb RimWorld.Verb_MeleeAttackDamage/Thing_Anthro19122_3_Smash; may have been changed through a version update or a mod change
}

Update:

I discovered that what was happening was a mod conflict, with one of the mods I made myself! I don't know why, but adding new bodypartgroups to body parts seems to cause this issue. Any idea why?