All of a sudden, my frames just dropped to 10. It was fine two days ago. I played competitive with at least 150 fps. I went on other games to see if it was doing the same thing as Overwatch, and they are totally fine. They are at least 200 FPS. Its only on Overwatch. Even on low settings, it is still 10 fps. Can someone please help me on this? Thanks 
Are you using any Razer devices?
Yes, I do have razer products. I uninstalled the Razer Syanpse and then reinstalled Syanpse 3. This has never happened before. Everything was fine with all of the chroma lighting. I dont think it was affecting it.
Also having this issue. Tried uninstalling Synapse and reinstalling the newest version but nothing.
These files typically need to be removed manually:
C:\Windows\System32\RzChromaSDK64.dll
C:\Windows\SysWOW64\RzChromaSDK.dll
C:\Windows\SysWOW64\RzAPIChromaSDK.dll
I have the same issue.
Uninstalled Razer Synapse and didn’t install Synapse 3 to make sure, also deleted 2 out of the 3 files you mentioned manually (“C:\Windows\SysWOW64\RzAPIChromaSDK.dll” did not exist), the issue persists.
Please assist at the earliest convenience.
I know you have the same issue, but to keep things tidy, can you start a new thread with your own DxDiag? Thank you!