I have noticed a significant reduction in user interaction on Edge version 25 versus version 20 that my co-workers are using. I tried IE 11 and Chrome and that interaction is OK. This is the Url for our application: http://iplan.meetingmatrix.com/apps/eventdiagrams, most of the page is Angular.
Noticed how long it takes for the drop down, on the left side which has the word "Theater" in it, to actually drop down, it takes almost 2 seconds. Same issue with clicking on any of the radio buttons, which will bring up an "update" overlay, it is over 1 second. Now compare the same steps in V20 or IE11 (or Chrome), it is almost instantaneous.
If I F12 and run the performance capture, it appears to be the painting that is causing the slowness, maybe.
Any thoughts as to why Edge 20 and IE11 are so much faster?