VladSnakeDragon

Will give it a try and a test, but that sounds like it's a constant stutter, not a FPS drop over time.

Nope. Over the tests I've done, I've just left it running as the active window, and not moved. It just slowly goes from high FPS to about 30 over a period of time.

So, I will start off by saying, yes, I have a couple mods for the game running. Last day or so, I've noticed that if I play for over an hour at a time on my SP world, the game would progressively start to get an FPS drop. Usually starting from 150 average, down to 30 stutter. HOWEVER. If I go into the settings, and change SSAO from High to Medium, it returns back to 150 FPS, and the cycle repeats. Changing SSAO back to High after an hour has the same effect, which leads me to think it's something with the renderer. To answer most general questions: It's not a PC issue. I am on a Ryzen 5900x, 64gb of ram, and a RTX 4070TI. Plenty of free space on my drive, All Drivers are up to date. Neither client nor server logs have any complaints such as "running behind" or "took too long", nor any tick values to be warned about. Now my question: I've played quiet a bit of minecraft, and it was always a big issue with mods. Some block somewhere would cause tick issues. There are mods that let you track these things, and point out the culprit. Is there anything similar, either built into VS or as a mod, that will ping to see if any specific blocks are building up the FPS drain?