Before today i had a 3.8GHz OC on my Ryzen 5 1600 at 1.2375v, which was stable for the last few months. But just today while playing Planetside 2 I noticed some choppiness and looked at task manager to see the performance. My CPU was clocked at 3.8 under Base Speed, but under the "Speed" text it fluctuates between 3.2-3.7GHz.(Seems to gradually get slower the longer the PC is on.) I then looked at CPUz and observed that my core speed fluctuates between 3398MHz and 3697Mhz, with the multiplier fluctuating at the same speeds.(This now seems to be resolved, setting at between 3797-3799MHz, with the Multiplier at 38).Restarted the PC to look at BIOS number and it said it was still clocked at 3.8GHz. Also just noticed that when trying to open Ryzen Master to check CPU speeds, it blacks out my screen without a PC restart. Throughout trying to figure out these problems, ive gotten a few weird Windows startup errors such as "Invalid login or password" before i even get to the login screen, and just a regular "Windows did not start properly" error screen. I might mention that i just installed a brand new GTX 1060 6gb yesterday. This mightve started happening before then but i only noticed it today.