The Nov security patch if that's what's being discussed really F'd up my signal quality. Got it a couple of days ago and installed on a pixel 9A. Signal strength basically cut in half from full bars at my house, I'm on AT&T. Tried resetting network settings, rebooting but nothing helps. Sheesh.
Used to be -90 dBm consistently at home now hangs around -120dBm. If I get closer to the same tower as always it goes full strength. This update really kiboshed it. Not happy