Frequently Asked Question

This is a known issue with the latest Windows versions ; it is due to a change in the graphics architecture. By default it tries to use "Fullscreen optimizations" that can delay the slide projection and cause the scan to fail. However, if the user moves the mouse cursor in IScan3D Dental, or if a TeamViewer session is active, it forces Windows to repaint the projector window.

The issue shows up in the log files as a wildly varying show time interval and latency in the slide video reports :

Log: Slide Rough show time & interval
Log: 1 74047.636 0.000
Log: 2 74849.394 801.758
Log: 3 75836.298 986.904
Log: 4 77765.565 1929.267
Log: 5 77888.423 122.857
Log: 6 77968.304 79.882
...
Log: 15 78720.506 87.929
Log: Camera Timing (211724015):
Log: Frame Call Time Interval Lag
Log: 1 878.193 0.000 849.991
Log: 2 1411.776 533.584 581.816
Log: 3 3396.157 1984.381 1579.293
Log: 4 3913.026 516.869 166.895
Log: 5 3996.536 83.510 127.548
Log: 6 4079.838 83.302 130.968
...
Log: 15 4830.208 83.018 129.137

The following procedure corrects the issue for all users :

1. Right click on IScan3D Dental, select "Properties"
2. Go to the "Compatibility" tab and click "Change settings for all users" (If the user cannot have admin rights, they can skip this step but the fix will only be active for their account)
3. Check "Disable fullscreen optimizations" and click OK on both dialog boxes.
4. The user should now be able to scan normally.