Using fresh animations and complementary reimagined and fps drops by about 40fps when looking at a group of entities(maybe 15+) but only when both are enabled. If it’s just the shader it’s a solid 120fps but if I disable that and just use fresh animations it’s also 120fps. Looking at my hardware utilization it’s not even capping my gpu or single core cpu so I’m not sure why it’s lagging. Just figured maybe it would be something to do with this mod?

I second this, even without any special properties being applied the frame drops from mobs is noticeably high. A good example is the reskinned zombies from the Enemy Expansion mod, the variant zombies that spawn drop your frame rate by about 5-10 each.