When kinetic scrolling is enabled and set to left click, it is near impossible to drag frames on the animation timeline to move them. Kinetic scrolling requires holding the cursor with minimal movement for a while (about a second) for it to interpret it as a normal drag and pass through the mouse event without triggering scrolling. This is made worse when using a stylus with Windows ink because holding the stylus in place will produce a right-click, so you have to move the stylus slightly to cancel the right click gesture but also not too much that kinetic scrolling kicks in.

(The layers docker have a similar problem, but because it does not have horizontal scrolling you can simply drag a layer to the left or right to initiate the drag operation, which is much easier to do.)

I don't know what is the best way to solve this though.