I have a similar issue where the game screen freezes and flickers. I ended up doing a factory reset, and things started to look normal again. Before the reset, I couldn't even play the Glowball demo app from NVidia.
After the reset, I tried several 3D intensive games, and I can play normally without crashing. I then reinstalled my trove of apps. After 200+ or so apps reinstalled on the tablet, I tried to play the same game, but the flickers and freezes reoccurs.
So it appears that having too many apps installed might be some factor on why the flicker occurs. Might be related with a memory issue someone outlined here.
After the reset, I tried several 3D intensive games, and I can play normally without crashing. I then reinstalled my trove of apps. After 200+ or so apps reinstalled on the tablet, I tried to play the same game, but the flickers and freezes reoccurs.
So it appears that having too many apps installed might be some factor on why the flicker occurs. Might be related with a memory issue someone outlined here.