My screen is 2560x1440 and have selected UI 1.25x scale since I'm not so keen on the smaller chat scale. Having that scale breaks tooltips in the collections settings though, as you go down the list for collection items such as allies or mounts, the tooltip box gets lower as you go down the list until its completely off the screen. This is annoying if you want to know the bonuses or just generally want to read the tooltips.

Also scintilla's speed bonus to those following behind doesn't seem to work anymore.