RBcAPGi-5acD2nD - cpu not running at default frequency

Hi, this router appears unstable, it was not reachable, I asked the client to rebot it and it worked again. Configuration seams ok, it was running 7.15.2 when happened, now I’ve upgraded it to 7.15.3.
Why it displays the CPU is not working ar right frequency? I’m afraid it’s because of that, how can I correct it? Thank you for help
cpumikr.jpg

Somewhere in earlier versions it was changed that CPU frequency should be set to auto.
Then the message will disappear.

Thank you I did, the warning disappeared, I hope also the unstability.
I’ve bought it with version 6, and that clock was specified already. That’s something I should keep in mind for next XL