Am I the only one experiencing fps drops in the Calamity biomes?

I have about 600 hours in calamity and I’ve always had at least 70 fps. But recently, it has gotten to the point where the game almost becomes unplayable (15-25 fps) I’ve tried tweaking my settings, installing performance mods (like nitrate) but nothing seems to completely fix it. Was there an update that changed something? I always play with infernum, but the problem still persists even when I disable infernum. Any help is appreciated.