When posting a thread of troubleshooting nature, it's customary to include your full system's specs. Please list the specs to your friend's system like so:
CPU:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Monitor:
As far as the issue is concerned, is the issue alleviated when your friend manually inputs timings, voltage and frequency in BIOS for said motherboard? Also what BIOS version is your friend on for said motherboard? Does the system crash to desktop or cause the system to reboot? Those are two issues and likely different from each other. One being related to the game being faulty/corrupt(game closes to desktop) and the other being an issue with power delivery when taxed(reboot).