Why do the newer Minecraft versions (1.15) jerky but with version 1.8.x or lower, do I have 300+ FPS on my Pc?

Ba
2

I usually have a lot of fps in Minecraft version 1.8.x.

But e.g. In version 1.15 / 1.14 or 1.11 I have extreme FPS problems (not due to Optifine). Can someone help me there because of what?

Sn

Because they are unfortunately poorly optimized. 1.14 even worse than 1.15. We can only hope that Mojang improves with 1.16.

Ba

So I don't really have much influence, do I?