Question GPU Fan RPM Unstable

[Jlg823]

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

 

[Fix_that_Glitch]

In the Msi afterburner fan setting, at the bottom of the page there is a box with Force fan speed update. Try using that setting and see if it settles down. Sometimes gpu drivers can affect fan speed settings even though you have manually set them.