I was taking like 120 fps. Sometimes more, sometimes less but minimum 100. Suddenly, it changed. Now, I'm taking maximum 30 fps. And I didn't change anything. I contacted a lot of time before, I reinstalled lots of time but nothing changed.

Here's some of my tries:
1.17.1: 15 fps
1.13.2: 32 fps
1.8.9: 36 fps

Starting setting: JVM Arguments: -Xmx6G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M

Specs;
CPU: Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz 2.81 GHz
GPU: NVIDIA GeForce GTX 1060 with Max-Q Design
RAM 16,0 GB
Win 10 / 64 bit