You're not alone here. PBO and XFR do nothing for me except *lower* performance and add more heat. My 3700x is at 4.3GHZ with them disabled, yet loses about 100mhz and runs hotter with them enabled. It's a total mess. I think the uselessness of PBO is covered by gamersnexus on youtube, among others. Probably best to turn this stuff off and just rely on the basic auto overclock and perhaps spend some time tweaking memory timings with AMD dram calculator/thaiphoon/memtest86 instead.