Thanks for your reports here! We’re seeing this for Overwatch and World of WarCraft for the RX 5700 cards in particular. This happens with any drivers above 19.12.3, including the 2020 Adrenalin drivers.
Rolling back the drivers to 19.11.1 has been confirmed to work around the issue. Some have found success with going through the custom install for the driver and removing the Radeon Software during the install and only installing the drivers.
As another potential workaround, if this may work with the 20.2.1 drivers, there’s gaming settings in the Radeon Software. Does disabling all of the Gaming settings by chance fix this issue? You may want to check that the Anti-Lag hot key and Chill Hotkeys are set to something that are not commonly used.
Here’s the main thread regarding this issue.