Operating system: Windows
Slicer version: 4.11.0-2019-06-23
Expected behavior: display views normally
Actual behavior: slice-views displays lag.
You see, now I have an image which has a pixel-spacing 15nm (that means, 1.5e-5mm). I load this image to Slicer and it seems fine. But the mouse-scroll to change slices along views does not work (slower than usual, the slice-bar on the top of each view work fine though). So I try to put a fake pixel-spacing value as 1.5mm or even 0.015mm, it works fine to middle-mouse-button-scroll to browse slices along views.
This issue may be reproduced by yourself , trying to use that famous MRHead image, if you set image pixel spacing as 0.001mm, it’s fine. but if you set image pixel spacing as 0.0001 mm, then you try mouse-scrolling where you may see my issue.
The famous MRHead could be load here as:
volumeNode = SampleData.SampleDataLogic().downloadMRHead()