I tested to use widget reflector to scale the things up to make it readable on a 4k screen (when disable windows’ default scaling), and I found the flickering problem is gone in 4.15, which is great! But when I try to drag and drop objects to the viewport, the location is not correctly scaled to the position of the mouse cursor.
For example, if I set the scale to 2.0, the dragged object will be at 1/2 of the position of the cursor’s location corresponding to the viewport’s boundaries.
Hope this can be fixed next preview, I think it will be simply applying the scale setting of widget reflector in the drag and drop logic.
I am using Windows 10.