Minecraft lies / GTX 1080?

I had my PC reset and reinstalled everything. My Minecraft is stored on the SSD as well as the Java 64x bit version (all current).

All programs etc. Are up to date, just like graphics card drivers and BIOS.

I played Minecraft with 120-140FPS / shader and RP 32x 7-8 months ago on the highest graphics, apart from the shader (only antialiasing FXAA 4x)

However, if I want to gamble now I'm only at 30-40FPS. (Remember that the PC has hardly any data on it since it has been reset)

You can see my data in the pictures.

The graphics card was "overclocked" with the MSI Afterburner.

Maybe someone can help me, I'm undoubtedly at the end.

16GB RAM

I assigned 8GB RAM to Minecraft.

And the CPU bar:

Did you set the fps number to unlimited in minecraft?

Yes I tried V-Sync first, then I'm at 60 FPS but then it is totally down because the FPS is always on 39-44 drops. At Unlimited I get the 130 fps in at the beginning, but that only lasts 20 seconds and then they are pushed down. In the background I hardly have anything going. 16 GB RAM & GTX 1080 should be enough for Minecraft with shader and RP on 32x or not?

Even other games like CoD run ultra smoothly.

My PC has 4 cores + 4 phantom cores, as far as I know Minecraft only uses 1 of them. But it can't be because of it?

Maybe make v-sync

Or reset MC settings completely

V-Sync is off. It still only runs at 30-45 FPS, even if I do it in windowed mode and relatively small, nothing happens. The FPS would then have to go up, but unfortunately this doesn't happen.

Go crazy 😂