Question GPU Fan RPM Unstable

Jlg823

Distinguished
Dec 26, 2013
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So I noticed the other day I could hear the fan kinda going up and down over and over again and when I checked MSI Afterburner, the fan RPM at idle looks like this: Imgur
The fan curve I had set during this was for it to stay at 20% fan speed until over 50c, which would be when gaming. I then noticed if I switch it to 25% minimum instead it looks like a normal straight RPM line. Wonder what could be causing the jaggy lines of RPM when below 25%. Any idea on why this is happening below 25%? And before it's asked: No, I don't have any RGB software or anything that controls fan speeds on my PC besides Afterburner.

CPU: 5900X
GPU: MSI RTX 2080 Super TRIO X
Motherboard: ASUS B550-F Gaming Wi-Fi