How uninstall Pix.exe (and disable 2k and 4k resolution)

How uninstall Pix.exe (and disable 2k and 4k resolution)? I have problem with some games after Pix.exe:
-Alien Isolation (Extended Mode)
-WarThunder (pimax mode)

  • DCS (Pimax Mode)

Hi, could you uninstall Pix.exe in your PC Control Panel?