Retroarch updated or not is not important, shaders updated are.
Please, post the content of the slangp preset you are using, the one you saved as default,under [retroarch root]/config/corename/something.slangp
Also, what’s your gpu?
Last thing you ,0may want to try is the upstream/in development version on github repo linked in the opening post.
I deleted the koko-aio folder several times and downloaded the latest version via retroarch shader updater. I’m using rtx 370ti and have the latest drivers available on the nvidia website. In the Genesis Plus GX.slangp file I have the following: #reference “:/shaders/shaders_slang/bezel/koko-aio/Presets-4.1/tv-PAL-my-old.slangp” I’ll check the github versions soon.
edit: First, I downloaded via github: koko-aio-slang-NG-1.9-Hotfix-2-slim I tested Sunset Riders and Adventures of Batman… no problems with RF noise. Then koko-aio-slang-NG-1.9.13 and here the problem occurs, the same as I described.
What’s your retroarch version? What’s the core and have you updated cores? Also please try with retroarch aspect set to full.
First, I downloaded via github: koko-aio-slang-NG-1.9-Hotfix-2-slim I tested Sunset Riders and Adventures of Batman… no problems with RF noise. Then koko-aio-slang-NG-1.9.13 and here the problem occurs, the same as I described.
Retroarch 1.17.0 Mame Core is 0.197 but I can’t update the Mame core as I would have problems with the roms. I update all the cores, shaders and whatnot but not the mame core
It appears like the core is telling the shader to use a wrong aspect ratio, that’s why i suggested you to set aspect full and not core provided.
it’s under video/scaling.
I think you’re right, I’ll do the tests later and let you know. Thank you 
Perfect, no problems.
Weird, time for a new release I guess.
Great, thanks for your help. I have a small request, are you planning any preset for Gameboy Color? The ones available for Gameboy Classic and Game Gear are great.
Just tried Aspect Ratio “Full Screen” and it doesn’t work. In the Batocera setting I always set “Core Provided” and it works fine. I do not know what to think
Not really, as I never owned one, so I don t know how they look.
Do the generic handhelds rgb presets look bad for gbc?
You can still force an aspect of 3:4 in the shader and save the preset as override for the game.
Generic presets are ok, but the best ones are those that have an overlay with the console and shed light on it (for example, GameGear-Overlay-Night.slangp).
edit: I have one more question (last one, I promise). What do you think about combining presets with video filters (those from retroarch). For example tv_pal_my_old from BLARG NTSC SNES Custom Pseud MD Composite ? From what I know, the mega bezel probably has such mixes.
The question was more like: do you think a preset like generic-handhelds-rgb or the dots one fits gbc display? which one better?
As per the video filters, I don’t think a shader nor a preset has a way to trigger cpu video filters, but I never explored the possibility.
However ypu are free tp use koko-aio features but the NTSC ones and use cpu/core filters for that.
Yes, that’s actually how I do it. But I couldn’t explain why on Batocera it works normally
I have zero knowledge about this console.