Well ya hes getting watchdog errors and other BSOD because of the high clock. Tell him to reduce his overclock to 5Ghz then test his build for stability with a stress test and take it from there. That CPU can clock high possibly 5.2Ghz on all cores but you need to wint he lottery to not get errors or heat issues no matter what cooler you use. I think you need to explain this to him and tell him reduce your voltage and OC to 5Ghz what are you trying to chase? Is someone after him does he need to go faster? The frame rates are same from 4.4Ghz to 5.2Ghz pretty much as long as your on Intel platform for last couple years that CPU is just as relevant at 5Ghz as 5.2Ghz so explain this to him and tell him you can do it for him for charge or he does it.✝🎗🤷♀️🙈👶