[Krobar]

Tried 18.2 on i7-6xxxx (620 GPU) laptop connected to Pioneer VSX-933 -> Epson TW5650. Tested Dr. Strange 3D bluray (not rip) - 3D worked in Up-Down but sound output was 2.1even though passthrough and sync framerate were set.
Must say that ghosting that appeared with Sony BDP6700 were mostly eliminatedby this setup.
Nicely done!

I retried the same test on NUC8i5 (iris plus 655) and it looks awful, as if someone crank the brightness way up - grayish with lots of ghosting. The projector is configured exactly the same, so does kodi. Any hints?

PS bit streaming works like a charm here. 

After multiple tests and cable replacements, "hardware based" stereoscopic output is only available when connecting the projector directly to the pc and not through a receiver.
When directly connected i get "Epson Proj" identified as the monitor, through a reciever i get "generic pnp" display.
Probably the projector is identified as 3d capable while the generic display does not so "hardware based" output is not exposed. In both cases the 3d is enabled in the windows display options so i'm puzzled.
If it is a common issue please update the google doc as i could find such issue in the thread. 

The problem is that the VSX-933 is an HDMI 2.0 capable device and I suspect your laptop is too; the first link in the HDMI chain must not be HDMI 2.0 capable (Intel never provided 3D support for HDMI2.0/LSPCON). One way you can often get around this is to use a passive Display Port to HDMI adapter which then makes the PC side HDMI 1.4 and should mean it works. This worked for me on my I3-8300 (Also Intel 620 GPU setup).