Personally I think it is a sleep issue .. If you power off your screen the nvidea gpu goes into hibernation and when it resumes the tablet acts independently (onboard gpu) and because the game cannot access the nvidea gpu instantly it crashes..
Remedy is the tablet needs to be querying constantly for the nvidea gpu and base station and not letting them hibernate.
This create two problems
1 power usage and overheating
2 bottlenecks for tablet usage which is a primary function of the device ...
So I guess there dammed if they do dammed if they don’t..