Enable the Steam overlay or EA equivalent, and enable the FPS counter. You will see this switch from FPS to FG back and forth. This means Force Frame Generation is kicking in, even though you have this disabled in the game settings. If this is the case there's a file “sl.reflex.dll” in the install directory, back this up and then rename/delete it. I then set DLSS to performance mode and then I only saw FPS on the FPS counter and no more FG. The difference is night and day and now I have way fewer insta-deaths and my bullets register when I'm hitting enemy players. I'm using an RTX 3080, which doesn't support Frame Generation, if your using a newer card this may not be the fix for you.
Update: After the update 18th Nov, everything is back to square one with hit-reg and insta-deaths. Jesus Dice this is ridiculous....! I'm done with this game..!!!!!!