I gave up with plugins, updated also BIOS and all drivers. Still the same issue. I guess your VR preview player is not good integrated in AE for most modern Geforce cards. I use now default VR immersive effects of AE + mantra VR effects, they work without a problem

I really tried everything: 1. Used AE2018 and AE2015 2. Enabled/disabled Mercury playback 3. Enabled/Disabled Gopro VR player in video preview settings 4. Enabled/Disabled Open GL, SLI and all possible settings in NVidea options 5. Deleted K-Lite codec pack 6. Installed/Reinstalled GoPro VR player a...