MiSTer FPGA Forum

Hi all,

My MiSTer is connected to a LG C2 OLED TV and I'm experiencing a very strange ghosting issue which I cannot seem to relate to any specific setting.

Essentially, the display seems to mangle the order of frames, causing the display to shift between the latest frame, folled by a frame that seems to be from 5 or so frames ago. At 60Hz the result is a sort of ghosting image.

I have attached my Mister.ini, but I cannot find any setting that reliably solves the issue. Changing vsync_adjust makes no difference, nor does disabling hdmi_game_mode or vrr_mode.

The one setting that does seem to matter is resolution. The issue does not seem to appear at 720p. e edit: also appears at 720p/

Strangely enough, I can 'fix' the issue sometimes by enabling and disabling the TV-settings for "VRR & Gsync" and "Freesync Premium". I have to do this randomly until at some point, sometimes, there is no ghosting anymore.

Ihave no clue what I can do to solve this. I'll add some pictures and If I can a video. It would be great if someone could help me out.

Do you have a motion smoothing option enabled on your TV? I'm not really expecting that to cause that effect, but you never know.

Another thing I was thinking of, is incorrect de-interlacing order, caused by PAL/NTSC field order differences, but it doesn't look like that.

The LG is in Game mode and no motion smoothing is available. Tried with a fresh INI to no result.

I am not sure if it helps but this video covers pretty much everything you might want to know about this TV model, maybe it may explain this behaviour you are experiencing.