Middle mouse panning in Ableton

I want to use my middle mouse to pan in Ableton. The shortcut for panning is Cmd+Opt+Left click drag.

I tried the following config but it doesn't work. The panning is choppy and not smooth, ie. it only updates until after I release the middle mouse button.

Additional bonus: Is it possible to map scroll up/down to zoom smoothly up/down in Ableton? The shortcut for zooming is Cmd+Scroll wheel. I don't see any option to send a smooth, continuous scroll event, only "Send scroll event" which only sends a hard-coded x/y value, resulting in choppy zooming.