Recently I have received a update for Galaxy Note 9, after this update while I was using the phone for regular purposes(not gaming). All of a sudden my screen becomes Greens and the transitions becomes slow.
Firstly I thought this is blue light filter issue but when I check it, it was disabled and the issue is still persisting.
I have looked into many forums to get a resolution for this, there is a temporary fix.
Disable your adaptive brightness and the completely lower the screen brightness this will remove the screen tint/ colour and you get the normal screen.
This was not satisfying resolution so then I checked other articles and forums. In few of them Samsung teams recerted asking people to check the same in SAFE MODE and then RESET the device. Even after following those steps I was facing the issue.
Here I have observed something.
So when this happened to me, I just left the phone idle for sometime and when check back everything becomes normal.