Memory problem with 9600x ?

[2Drunk2Funk]

New build 9600X with crucial 6000 memory.
CS2 crashed direct to windows. Nothing overclocked yet. All done is set memory in bios to expo1 which matches memory settings.
Read the 9600x only supports 5600 speed but also read others state can run 6000 fine.
Is there some other settings in bios I need to make?
Mobo is asrock b850-a pro wi-fi
Paired with 9700xt

TIA

 

[2Drunk2Funk]

It is an assumption at the moment as rest is stock and temps seem fine. All drivers up to date and latest bios.
Sons PC I built for him but don't get much time on it myself to diagnose

Memory was on auto before I put to expo, also crashed CS2 on that, but quicker. He had said it crashes almost straight away but let's him play for a while if just reloads.
Consistently crashes though.

You helped with the spec and queries

 

[2Drunk2Funk]

I think he has played fortnite as well, but not as much and he not mentioned that crashing.
I will find a slot to run memtest64 on it with both settings.
Could be a CS2 thing. As its a new build he not done much with it yet, mostly CS2 with his friends.