New Patch - New Problems

Hello everyone!
I play for a very long time (since 2016) and I see some regularity.
When a new patch comes out - why few days are terribly played?
I turn on and off V-sync, update drivers - nothing helps. My fps like equalizer - from 45 fps to 120. When I just bought game I used 100%, now only 50% graphics settings.
My notebook is not so good - just i5 6200u, 940m ,12 ram, ssd.
But what will happen after another patch …? :fearful:

Here ya go:

GUIDE: Maximizing System Performance for Overwatch (PC)