SBS 3D bad resolution

Hi,

I got a bug since openelec 4

I often got bad SBS quality videos,
when I check for original size I got a small video window (i got 1080 video files)
the video size is changed (downscale), and the quality lost

OpenELEC Mediacenter - OpenELEC Forum - Bad SBS 3D autodetect (1/1)

Same problem with the last libreelec stable version

thanks

Here's the Kodi Log,

when i use the same file with my windows computer
I don't have the same trouble

Actually, when I open the file the image size is ok
but when I need to forward / move,
the image is downscale

something to do with :

18:38:15 T:139967718631168 NOTICE: (VDPAU) screenWidth:960 vidWidth:1920 surfaceWidth:1920
18:38:15 T:139967718631168 NOTICE: (VDPAU) screenHeight:540 vidHeight:1080 surfaceHeight:1088

the screen Width and Height are reduced...

ti was ok at the beginning :

18:37:24 T:139967718631168 NOTICE: (VDPAU) screenWidth:1920 vidWidth:1920 surfaceWidth:1920
18:37:24 T:139967718631168 NOTICE: (VDPAU) screenHeight:1080 vidHeight:1080 surfaceHeight:1088

do i have to change video conf ? VDPAU ?

Thanks
[hr]
I desactivate "Prefer the VDPAU mixer" and now it's OK...
but no VDPAU mixing option (sharpness and noise reduction)
I did not use them... is it a bug ?

I can see my 3D movie again !!

When I desactivated the VDPAU mixer I got some video artefacts in 2D videos...
Actually I have to switch between VDPAU mixer dor 2D or 3D...
I think I will change hardware !!