green light Posted April 13, 2020 Share Posted April 13, 2020 (edited) The new UI (current state?) is poorly slow in Firefox, especially scrolling and zooming the map can't be used, less than 3fps. Old (classic) UI fast very very fast. Firefox runtime analysis shows many style, layout, DOM events and HTML parsing even when nothing is done. This analysis created a 32 MB json file, don't know what it can tell you... For me it looks like this happens when you loaded several saved plans with different routes in the same session. Edited April 13, 2020 by green light Link to comment Share on other sites More sharing options...