I had the same issue. Then I had read somewhere that it's related to VOIP, so I turned it off completely + changed default input device so that my mike won't work completely, restarted the game and everything works without spikes at 1440p with full zoom. It may be related to custom sound card cause I have Asus Xonar DX.
Hi everyone. Do any vehicles contain zombies inside? I kind of afraid each time I want to search it or get inside it. If not - I think it's a great suggestion to make it happen so that you will need to very carefully search the car from the outside (for example through windows) and make sure there are no infected there)