Hi Arne,
Putting the view in a CLayeredViewContainer did not improve performance. I’m seeing significant performance issues when using COffscreenContexts on macOS / iOS in general. Drawing with OGL is by far the most efficient, but even redrawing the entire scrolling view from scratch each time (which is about 300 line segments) is significantly more efficient, at least in terms of CPU, than using a COffscreenContext as a ring buffer.
Regards,
Rob