I have 150 to 400 FPS in Minecraft But as soon as I turn on Antisotropic filtering in Optifine I only have 30 to 60 FPS even though the CPU utilization is only 25% and the GPU utilization is 20%. Does anyone know why?
Maybe because of the RAM, which one do you have?
Software may be configured incorrectly
Too little ram, I always assigned Minecraft around 16 GB and back then around 1.6 4GB
2x8GB 3000mhz
In what way?
Any restrictions.
I assigned 16 GB but didn't change anything
If your PC only has 16 GB you can't give as much, I always recommend 1/4 so I always did
Allocated 4 GB and is still the same
Hardware
R5 3600
RX 5700
2x8GB 3000mhz
I would set up the PC again