User cannot select a floor from the Floor Selector. You can expand the buildings to see the floors, but not dbl-click to activate a floor.
Slowing down the double-click speed in the windows mouse settings will improve the issue. It has been implemented on a few user machines with 100% success rate and it works. The users just needed to re-start AECOsim Building Designer after changing the settings and then they could select the floors.
Another possible workaround is to delete the user preference files and then select a floor