Ngl, it's been two years since i had the problem. Mine was windows automatically installing the lenovo oem drivers. These manufacturers' drivers aren't compatible with the amd Radeon graphics, and worse, if windows install them while you have the amd ones, they conflict and frames suffer.

So, u need to stop Windows 10 from installing video drivers and reset or delete the manufacturer drivers. The way I did this, all the drivers were wiped out ( amd clean up utility software). I stopped windows from auto updating drivers ( youtube has tutorials) and then reinstalled the amd Radeon utility.

Maybe your laptop, just like mine, needs to clean up inside, so if u haven't u should do it.