Hi
We still get slow down in button tools sets in 2015 (sp4) in OSX10.11.2
2016 (sp2) still slow in screen area but get performance jump in both releases (vis a vie cursor lag/zooming etc) 2016/2015 when View - Unified view is selected/ticked (default is off). I saw this issue/temp fix raised in another post which has helped, but still not great though
J