Question CPU is overclocked when idle & there's a brief green-screen when COD is launched ?

Oct 12, 2021
I've got a:

B550l Aorus Pro Ax Mini ITX AM4 board
Ryzen 5 3600
Nvidia RTX 3060 Ti

I'm running into a few issues. The biggest being that, according to NZXT CAM, while idling the CPU overclocks by about 1ghz. not sure how big of a deal it is or isn't. It's my first solo build and im not sure where to go from here.

My second issue is that when i load up COD Warzone i get a second or two of a green screen, it only occurs with that game. Airflow isnt the best in the world, Ive got 1 exhaust fan and 2 fans on a Corsair iCUE H100i Pro XT 75 CFM Liquid Cooler. It definitely runs hot in the case when gaming but it doesnt appear to be excessive.

Also im using the DisplayPort slot.
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