I recently tried to OC my ryzen 2600x with pbo + xfr with bclk. Bclk set to 103 and ram at 3333 cl18(3430 with de bclk). I ran prime95 blender for 3h and aida64 with cpu,fpu,memory and cache for 7h without crash. Can I consider my OC stable?
.....
But I would not overclock with BCLK. Because you change the speed on which every other device works.