In a recent scandal, IM Gotham correctly pointed out a cheat even before the game
https://www.youtube.com/watch?v=tAY_pC3yc0c&ab_channel=JustForFunHD
The video was in a low digital quality so I couldn't see the screen properly. Not sure where to find the original high definition video. How did Gotham find out the person was a cheater instantly?