As the title describes, opening an empty canvas (2090 x 1361) and just slowly zooming or panning is painfully slow. Decreasing the canvas size yields the same behaviour . Artrage 5 goes to over 150% utilization and stays there until I stop panning or zooming. Even just hiding the UI (with tab) a few times and I can see the CPU quickly increasing (over 50%). Any ideas what could the problem (assuming there's one) ?

- Artrage 5.0.5 - 64 bits

- macOS 10.12.5:
  • 5k Retina
  • RAM 40 GB 2400 MHz DDR4
  • 3.5 GHz Intel Core i5



Note: I understand the Artrage uses the CPU instead of GPU but I tested Artrage 4 demo on a much less powerful machine (Macbook Air) and the experience there is was very smooth (even with the spike on CPU utilization).