Whenever I’m in game, and I can shoot, I get a very low around 15-30 fps, mostly unplayable. In spectator mode I get 60fps, and everywhere else. Just in-game when I actually am in game and can shoot I have very low unplayable fps. Nothing is overheating, I have updated windows and nvidia drivers. Also my computer is way good enough for OverWatch, I have a 2080 ti XC. I have also done disk cleanup and reformated the SSD overwatch was on and repaired/redownloaded it and still have the issue.
Your issue might be related to a recent bug with the Razer Chroma drivers. Known Technical Support Issues