Measure CurveRenderer performance

Benchmark and analyze curve renderer performance, and create sibling tasks for any issues that are found.

Create a full profile of CurveRenderer bottle necks, both in loading and rendering, and spin off tasks to improve. For instance, doing the fill and stroke in the same shader may in some cases give improved performance, so that is something that should be checked. And there are probably many other places where ms can be won, but we don't yet have the overview of where.