I'm running the latest v4 beta on my Windows 10 laptop and I'm getting a odd behaviour after MOi3d has been in the background for a while, the viewports go black and the only way to get them back is to restart Moi3d. I'm not usually a Windows user so I'm almost certain its a windows setting that I have wrong, but I'm not seeing any similar behaviour with other 3d apps. Anyone point me in the right direction. Cheers Colin