Game Demo: https://maiu-online.io/
Hey!

Finally I manage to finish one the most impactful performance improvement, which are VAT animations. Instead computing each frame rigged animations for each monster texture with precomputed data is passed to the GPU. This greatly unloads CPU with a very little cost of GPU.
I run my game on old laptop with I3 6006U processor (2GHz) and It's running on 60fps!
Screenshots below presents performance on I3 laptop (with a lot of monsters ~ 130)  - 60fps
and the second one is regular number of monsters ~30 and newer CPU - 180fps




Newer CPU - AMD 7 8765hs: