Low FPS since switching back to locally hosting PVE [Feedback]

AMD Ryzen 7 3700X, 32 GB RAM, GeForce RTX 3070

Since they reverted PVE back to local hosting, it's been even worse than before for me, I barely ever get 60 fps anymore, and often it's just straight up 30 fps. I also weirdly get like 80-90% GPU usage sometimes, which is very unusual, before it used to be like 30% on most raids I think?

I kinda can't play like this lol, I'd understand if I was on a low-end rig but like, I've got a decent PC. I don't think 30 fps for a 6 year old game on low settings is very reasonable

UPD: just had a lighthouse run doing punisher pt 4 and i had 18 (!!) fps with 50% gpu and 18% cpu usage. that's literally unplayable, wtf