performance problems about customnpc-plus

[KAMKEEL]

It's likely 1.7.10's Minecraft's Path Finding. It's not that optimized. But, 100 NPCs are a lot to be path-finding at once. Perhaps mods like AI Improvements can help

[yurannado]

seems that the only way is to reduce the number of npcs. AI improvements does little help =(

[yurannado]

oh,wait. i tried to spawn 150 zombies and flew around them. tps did not drop to an unacceptable state. but when i tried to use 150 npcs with 32 aggrorange, tps dropped much lower. and i realised that this only happens when players are flying, simply walking around is fine.

[KAMKEEL]

NPCs hold far more data than a single Zombie Entity does in Minecraft. 150 NPCs -- are all consistently scanning 32 Block Radiuses from where they are. So if you unload and load in the chunks where they stand, they will have to rescan everything.
You will need to profile some data with a PLUGIN or MOD like SPARK for 1.7.10 FORGE in order to give me useful information.