To anyone applying the BIOS/CONFIG_RCU_NOCB_CPU/ZenStates solution together with the idle=nomwait solution, I believe this is unnecessary as these are different problems relating to different CPUs. The former worked for my Ryzen 5 1600X, while only the latter worked for my much newer Ryzen 7 2700U (Raven Ridge). I've heard the idle=nomwait issue applies to all Raven Ridge CPUs. I don't know if that's true but I'm fairly certain it doesn't apply to any earlier hardware.
To anyone applying the BIOS/CONFIG_ RCU_NOCB_ CPU/ZenStates solution together with the idle=nomwait solution, I believe this is unnecessary as these are different problems relating to different CPUs. The former worked for my Ryzen 5 1600X, while only the latter worked for my much newer Ryzen 7 2700U (Raven Ridge). I've heard the idle=nomwait issue applies to all Raven Ridge CPUs. I don't know if that's true but I'm fairly certain it doesn't apply to any earlier hardware.