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Not from the reading I've done. I'm running -110 on my i7 laptop happily with no performance impact. Stress testing I did suggested it would happily run at -130 and I walked it back just to ensure it wasn't hindering the processor (which apparently it doesn't do anyway). I got a 10 degree heat difference which has really improved things which is important because this one really likes to thermal throttle.
Dust quite likely.
Might be worth giving it a small undervolt to take around 5degrees off the temp.