Why does using my Switch 1 (docked) with my PC monitor hurt my eyes, but not my PC or undocked Switch?

Title says it all. I’ve been playing video games for a couple decades now so in general screen usage doesn’t really affect me, but my Switch gives me a nasty headache but only when using it docked with my PC’s monitor. If the Switch is docked and plugged into the TV it doesn’t bother me, if the Switch is undocked it doesn’t bother me, and if I’m playing PC games on my monitor it doesn’t bother me either. I’m not very tech savvy, so my best guess is it has something to do with the settings of my monitor and my Switch not agreeing but I don’t know what that could possibly be. I don’t adjust my Switch’s or my monitor’s settings at all, so if there’s some kind of setting I need to be turning on/off that I’m not currently aware of I would be delighted to know!

I’m assuming it’s relevant, but my monitor is an MSI Optix G32C4W