If you don't want the Windows taskbar to burn in on your OLED monitor, you probably have it set to auto-hide. This works, but it means you can't see the PC's clock or which apps you have running, which can be a deal-breaker for productivity.
AlomWare Toolbox offers the perfect alternative: an option to shrink the taskbar to 1/4 of its size while keeping it in the full-sized taskbar area, but auto-moving it every minute to a different spot inside that area. See the screenshot below. That way you still get to see it at all times, but it won't cause burn-in on your monitor. When you move the mouse over it, it auto-expands back to full size temporarily for clicking something or just to see it at 100% size.
(https://www.alomware.com/images/prevent-taskbar-burn-in.png)
This feature is essential for me with my OLED monitor! Had it enabled for a while now and it's definitely better than auto-hiding the taskbar (for me, anyway). This tip should be stickied because I see so many posts about taskbar burn-in gaming forums.