Reported by jteh on 2015-08-19 00:52
There are several tweaks we can make to improve performance related to querying information from UI Automation. Some of the less risky changes have already been committed to master for 2015.3 (fd9d10a, 020e3f6, 8fc7574). There are some further changes in the UIASpeedup branch.

One other tweak we can make is only fetching ARIA role for Edge. We'll probably discover more as we investigate further.