Since the 20w22a, my minecraft doesn't stop spinning at 5fps max.

Before the snapshot:
my minecraft (before the snapshot) was running around 50-60 FPS sometimes at 80

Since the snapshot:
My minecraft is running at 5-2 FPS.

which I guess is the problem:
since 20w22a, mojang replaced the old rendering system with a new experimental one, and they said that PCs with old graphics cards would have problems. So it might have something to do with that.

my graphics card
Intel HD graphics (integrated)