The code in picard/ui/searchdialog.py queues webservice requests for searches with defaults priority=false and important=false.

This puts the request (which the UI is waiting on) to the back of the MB webservice queue and the UI then needs to wait until all previous requests are finished before it gets a response, making the UI less responsive.

The search webservice calls should be made with priority=true and important=true in order that this request is handled next.