Question / Help Frame roulette (flashing objects invisible): No deinterlacing option


New Member
I stream games from my Xbox One (retro games through Retrix emulator in XB1 dev mode) to the Xbox App to PC.
On my PC I capture the game window from the Xbox App to OBS. It works great so far!
But when watching the footage I noticed frame roulette on Neo Geo games (flashing objects missing half of the time), so basically the same as shown here:

Solutions on this thread are:
- Streaming with 60 fps (atm I use 720p 30fps). I heard switching to 60fps could affect the quality (OBS recommended 30fps in auto setup)
- Blend deinterlacing. I would love to give this a try, but I can't find the option for the game capture window.
Can anyone give me a hint how I get it to work?

Thanks in advance!