I think you'll need to do a bit more diagnosing here.
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How about running this app: [https://www.tunabellysoftware.com/tgpro/|TG Pro] it will allow you to see what the built-in thermal sensors temps are as well as tell you if the systems fan cooling effectively or not.
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How about running this app: [https://www.tunabellysoftware.com/tgpro/|TG Pro] it will allow you to see what the built-in thermal sensors temps are as well as tell you if the systems fan cooling effectively or not. Take a full screenshot of the main display so we can see what it shows. Paste it into a fresh answer.
I think you'll need to do a bit more diagnosing here.
How about running this app: [https://www.tunabellysoftware.com/tgpro/|TG Pro] it will allow you to see what the built-in thermal sensors temps are as well as tell you if the systems fan cooling effectively or not.