I'm using a ryzen5 2600 on a X370 motherboard. I use a Wraith Stealth while overclocking. I can only use 3 cores, 3 threads to reach 4.05ghz safely. Is it supposed to be like that?
The Wraith Stealth is not designed for overclocking, and due to the design of Ryzen processors featuring a mix of slower and faster cores, as you have probably seen since you have to eliminate a core, it's what I would expect.