SketchUp 2016 Pro acting slow

I found out this strange thing. I hope I can explane this in English. I am working with a UHD 3840x2160 monitor on a Windows 10 workstation. Sketchup 2015 Pro is working fine, but Sketchup 2016 Pro (Windows 10, 64 bits) is sometimes acting very slow even with a new empty drawing. I found out that when I reduce the window size (make it a little bit smaller than full screen) the problems are solved and SU 2016 is running normal. I cannot explain this.
Best Regards, Richard

Have you tried an uninstall and reinstall?

@haliebradley Many, many times.

Quite an old post indeed, but I have exaclty the same problems on my workstation with windows 10.
Big models are running fast and well on Sketchup 2015, and really slow on Sketchup 2016.

Edge Style works a bit faster, but once shadows or profiles are activated, it’s owfull.

RichardMuller, did you found an other solution than downgrade to sketchup 2015 ?

@Minguinhirique Yes as i said “I found out that when I reduce the window size (make it a little bit smaller than full screen) the problems are solved and SU 2016 is running normal.”