you can make zombies outside the city with a smaller amount, otherwise on my video card, the block module from 3D loads and heats up strongly and is loaded up to 100%, even though I have Nvidia 1060 on 6GB or it depends on another mod get something bugs in this graph or something is screwed up XD
if you need any more ideas, I will be happy to provide more balanced things that do not get out of the setting and the genre of the game, and some ideas are so if you really like it, I wrote