Latest patch cuts performance by half

From several posts I see that this is not only my problem?

RTX 2060, used to hold 200 frames stably, but now I experience drops to 100 frames, which is simply unplayable, because input lag appears. Changing the resolution doesn’t make any difference at all, which means that the problem is not in the hardware.

is there any information when this will be fixed and whether it will be fixed?

i would check for an update on your GPU, and if you are running latest version, perhaps roll back to the previous version.

I’ve already done this and many other things, nothing helps.