One thing worth looking into is if your thermal paste needs replacing.
I see you’ve got an 8145U, that’s old enough that it might need re-pasting. Laptops generally have terrible thermals to start with, so if the paste goes bad you’ll often see them start to thermally throttle on fairly light workloads (like Deltarune).
Another thing worth considering would be to turn on thermald to better control your temps.
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