If you use Open Browser together with Attach Browser and in there have a Selector activity like Element Exists. The Selection is super slow!!!
See this video to get an idea how slow it is. But this shown in the video is still fast! In my actual process I have even more activities and there the selection even freezes and needs 1 min before Windows is reacting again. This is terrible and is actually a huge bug!!!
2019-12-16-11-28-16.7z (1.6 MB)
To reproduce take this process. But again the selection is slow but the trouble of freeze is not happening here. You will need more activities and use of multiple windows to reproduce it.
Sequence2.xaml (7.2 KB)
Let me know if you need more instructions on this.