Low fps in minecraft / good pc?

I play minecraft and have relatively few fps, but the thing that I have a good pc, or relatively good.

i7 6700 (without k)

GTX 1070

16GB DDR4 Ram

SSD is also installed…

I played vanilla

I have tried vanilla and have only about 80 fps which always drop

i have played with optifine and with forge (minimap and optifine and the fps will be less.

I have the chunks down and everything but I should be able to play with the pc but easily? I put up the fps in the settings and vsync off as well as everything from nice to fast but it does not work…

Look at temperatures CPU utilization and GPU utilization

Minecraft assigned enough Ram?

Yes 8gb

70% Cpu approx. And below 20% gpu utilization

Install Java and Minecraft all over again.

Can be a bottelneck but I'm sure net

Have exactly the same problem only that my not even 40 fps creates.

How do you do that?

Bottleneck is at 100%

Use another Minecraft client