Hello, I wanted to start this discussion as I didn't saw threads about these issues.
Sorted by importance
Specificly on MS Edge no matter on which version there's a seriously noticeable window drag delay when dragging the window on a touch enabled device using your finger or a pen this issue is not present when using the mouse. Also not present on Firefox or other windows apps I don't use chrome as Edge is just top notch.
I noticed that the GPU on edge does not get that much utilized compared to firefox when dragging also when the device is plugged in this issue gets weaker not gone but less noticeable might suggest that this is connected to Edges power saving measures?
Scaling PDFs especially when drawing got slower I know alot has been changed in order to have the best performance for pdfs but maybe there can be done more to prevent these lags.
Regarding vertical tabs the animation feels really choppy and downgrades the experience a tiny bit