I've had my ASUS Zephyrus GM501GS for c.5 months as of today.
For the last 3 weeks, my computer started to enter sleep mode when starting a game for example.
According to ThrottleStop my CPU maximum temperature just before goes to sleep is around 75ºC, which seems to be threshold it activates the sleep mode (update: ran CPU benchmarks and it all works well, max temp around 80C).
EDIT: When running GPU benchmarks it instantly crashes (PC goes into sleep mode). According to CPUID HWMonitor there is a power peak of (>5000W) which is probably the source of the program.
When I wake the computer everything is as before but I have to quickly close the game before it goes to sleep again.