u/AlchemistModels

My 2017 iMac has started restarting itself when the screen has gone to sleep. Doesn't happen every time but I'll usually come back to it in the morning and found it has restarted itself due to kernal panic. This could be either some unhappy software (best case) or a failing GPU (worst case) or unless anyone has any other ideas?
The beginning of the Kernal panic is: panic(cpu 0 caller 0xffffff80116f7d08)