Created attachment 254939 [details] Big SVG file with ~24k circles 6MB SVGs are rendered really slowly and may hang the browser. Chrome seems to handle these cases pretty well.
<rdar://problem/21406773>
Not unresponsive anymore but still much slower on pan and zoom than Chrome.
I am not able to reproduce any crash and panning zooming is also responsive now using Safari Technology Preview 151. I am going to mark this as "RESOLVED CONFIGURATION CHANGED". Please reopen, if you think it is not fixed. Thanks!