I really have low fps in high populated servers, 25-30 fps in wilderness 15-20 fps around towns. I usually get 50 fps outside of town and 30-35 in big towns on servers that has around 10 or 15 players.
This low fps makes the mod unplayable and i was wondering if there is any fixes that i can get more fps in high pop servers.

I only have this problem with this mod, i have decent fps on other mods like vanilla or epoch when there is around 60 players

My specs are: EVGA GTX750 TI 2GB
AMD FX-8320
8GB of ram