Strange experience with the vp16 'benchmark' project within vp17. Origonal SampleProject was opened within VP17 and immediately saved as V17_SampleProject4K.veg. VP17 closed, reopened and the V17_SampleProject4K.veg reloaded as expected.
If the cursor is placed beyond the media end the timeline cursor can be stopped & started via the spacebar or timeline comtrols. Reposition the cursor within the media and VP17 locks up. Closed via task manager.
The origonal .veg file re-saved as .veg.ORG within windows
No such problems with VP16. Any ideas. Machine details in signature
Checked out the old 'Red Car' project with VP17 without problems
Edit : Think I have solved problem. Nvidia now selected in prefs/video. Was Intel UHD by default
File I/O Enable Hardware Decoding for supported formats left checked.