I have been having a lot of trouble with Lucidcharts lately. Got to have an extra dose of patience.
No matter how complex the work. Takes me an absolute age to do anything from manual data input resize rename a text box data link. You name it its slow. Unusable.
Tried and experience the same issues on work boradband (10G) home broad band (1G) on my Mac Pro iMac Mac Mini on my HP Notebook on my Dell desktop in other words all different machines. The mac Pro i use to render films..... I Have always used firefox and particularly wouldn´t like to change browser.