Framerate by roughly half when inside forest. Outside of forests framerate is somewhat stable but game is prone to noticeable stuttering when moving around. Cannot seem to resolve issue. Game is modded running on 1.22.6 w/ Optimum. Issue persists without Optimum installed. Mod quantity or type does seems to have a slight affect on average performance, but does not resolve the issue with stuttering or poor performance in forests. View distance seems to have the greatest affect on framerate, but stuttering persists and framerate still drops in forests. Spent quite a while messing around w/ nvidia settings (Threaded optimization, Vsync, Low latency mode, Power management, Vulkan/openGL present method, etc.) with very little improvement. Drivers are up to date. PC specs are as follows
Ryzen 9 5900X
GeForce RTX 5070 12G
32 GB RAM
1440@180Hz
More that happy to provide more specific information if needed. I apologize if my writing is somewhat incoherent or rambling as I am not the best at communicating.