There has been some major slowndown introduced in SVG parser recently.
It looks to be the new handling of dashed-line but which do not handle the "null" value for stroke-dasharray
which seems to be always set by some SVG authoring tool.
Just need to replace line 612 of juce_SVGParser.cpp by
if (strokeDashArray.isNotEmpty() && !strokeDashArray.equalsIgnoreCase("null")) parseDashArray (strokeDashArray.getCharPointer(), *dp);