Actually to dragging and scrolling to the right side works (sort of). It's extremely fast. I tried to change Options.AutoscrollingSpeed, but the value 1 is the slowest (and already too fast). Also tried Options.AutoScrollingInterval, set to 200 but still not usable.
What are optimal settings for smooth dragging/scrolling and still being able to see the columns go by, so you know where to drop.
Dragging a column to the left size doesn't seem to work at all.
the AutoScrollInterval was not correct applied. This has been corrected. In the next version you will be able to scroll automatically by changing the AutoScrollInterval property. This property is in milliseconds. So a value of 1000 will scroll every second.