My friend and I are playing B41. His FPS is normally fine (~160, with weird drops down to ~80 then ~40 then back up to ~160 in the span of a few seconds), but it drops hard when loading new cities/areas with lots of tiles or zombies, especially while driving, falling to single digits and then hovering around ~30 until he restarts. I’m hosting the server with 16 GB of RAM dedicated, and we’ve both allocated extra RAM to Project Zomboid. I don’t have this issue at all, either in solo or when hosting. He also has no issues in solo—this only happens when playing with me. (We're gonna test him hosting next time he is on.)
We’re using the Sophie Main modpack v1.14 (I hope this isn't advertising?) which consists of 485 Workshop items. We followed all the installation steps, and everything works fine at startup: the server loads, all mods seem to be functioning correctly. However, when exploring deeper, even vanilla areas like March Ridge, his FPS tanks while driving through the area, whether he’s the driver or a passenger. The issue isn’t limited to vehicles, but that’s where the FPS drops are most severe. We both have beefy machines (definitely high enough specs unless something is failing) so im really lost at what could be the issue. Just wanted to throw this out in-case someone can help or if there has been a ticket with a similar issue, thanks for reading