Might be a bugged driver from Microsofts end as some of the updates have throwing compatibility settings out. Might pay to download clean 18.4.1 driver from AMD site. Look for the program DDU run in safemode remove existing AMD drivers with a registry clean. Fire back up on basic adaptor settings & reload drivers as a clean install & try again. I would just recomend to load fresh drivers to eliminate bugged drivers issues never know.
No, it's not stutter. It sounds like a sync issue. Anyhow please post your specs, give us detail on gpu, monitor and resolution and connection (HDMI/DP,DVI)
Have you tried a different monitor?
Did this happen with older drivers?
So many questions....