since today whenever I draw a few lines I experience lag when zooming in/out, moving the picture with the right mouse button. This happens with large pictures with many layers as well as small pictures with one layer. I checked Artrage 6's CPU usage in Task Manager and whenever I move / zoom the project it randomly spikes in usage. This also applied with different tools used etc. Yesterday I did not have this problem and I cannot explain the sudden lag issues, though there was a new Windows 10 update today.

thank you in advance for your support. :-)