[josm-dev] How do I edit big relations and detailed contours now that XML style is removed?

[Gertrud Simson]

When we switched from XML to MapCSS, MapCSS was faster than XML with
processors with 4 or more cores. With 3 or 2 cores it was nearly as fast as
XML. See https://josm.openstreetmap.de/ticket/9691#comment:32.
Does it help, if you adjust some style settings
https://josm.openstreetmap.de/wiki/Help/Dialog/MapPaint/StyleSettings ?
- check Hide icons at low zoom
- check Less obtrusive node symbols at low zoom
- uncheck Display street labels at high zoom

There is also the plugin Open GL
https://github.com/michaelzangl/josm-plugin-opengl/releases . Does it speed
up the drawing for you?

Stefan