It's probably the 2.4GHz WiFi transmitter interfering with the 2.4GHz mouse transmitter. You probably notice it during YouTube because it's constantly downloading. Try a wired mouse.

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throwawaylaptop 6 days ago | parent | next [-]

Interesting theory. The wired mouse is trouble free, but I figured that's because of a better sampling rate and less overhead over all. Maybe I'll try a bluetooth mouse or some other frequency, or the laptop on fired Ethernet to see if the theory pans out.

	▲	Sohcahtoa82 5 days ago \| parent [-]
		> Maybe I'll try a bluetooth mouse Bluetooth is also 2.4 Ghz.

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lostmsu 6 days ago | parent | prev [-]

Or just switch to 5GHz or 6GHz range.