When dragging files to folders, the folder view scrolls way too fast for anyone human (that I know of) to react to it fast enough, especially when the tree view is limited into somewhat small box. It's a twitch fight to get the thing scroll to right spot and then try to get it not to scroll away from there as if you had wanted to put it elsewhere. So either slow it down considerably or better yet, offer an option to adjust the scroll rate to suit people's personal needs.
Some apps use incremental scroll where the scroll speed is dictated how far from the scrollarea edge you are, which is nice since then you can adjust the scroll speed to be faster when you need it by moving the mouse closer to the edge and stuff like that.
(As a side note, please allow drag & dropping folders as well)
Scroll speed when dragging files to folders
Moderators: helmut, XnTriq, xnview