I turned the Hot Corners off and it's still touchy - move the mouse too fast & I get all desktops.

I'm used to using hot corners along with multiple desktops on my laptop to provide multiple clutter-free spaces for the many different applications I run (still enjoying Yosemite).

Often, and especially when using Parallels 10 with Windows 7 Pro, simply moving the mouse too quickly, or, along the ribbons in Outlook or Explorer, the upper-left hotcorner is activated, even though I've gone no where near that corner, while using the Display Link mounted screen.

Also, the DisplayLink automatically adds another desktop for the external monitor, while I'd really just like to work with the ones I already have (usually 5-7 desktops).

I've tried rearranging the menubar, the order of the screens, no avail. More settings are needed and better integration with multiple desktops and a less 'touchy' hotcorner trigger.