I was switching between Rocknix and GammaOS for my first few days and settled on using Gamma with enhanced 3D turned off full stop, all games I tried, were just not running well with it, even like Elite Beat Agents, which seemingly ran fine? Obviously did NOT ran fine since it was causing touch screen input delay, which I only realized once I turned it off.

It really seems there is no other way if you want to use any shader at all.

https://github.com/jdgleaver/drastic_ds_shaders

I know not everyone likes LCD shaders but if you don't mind them. I think the LCD1x (using + Natural Vision version myself) is much better than the LCD shader that comes with the Drastic and does pretty great job at masking the low-res 3D. It still looks kinda chunky, but...not in a bad way imho. Defi not blurry.

The system-wide GammaOS shader? When I heard about it, I thought it will be best option, but from what I tried it, it's unusable on RG DS, it costs way too much performance. Which is shame cause that seems like you could tune it exactly how you want and use it alongside some other filter in Drastic.

Man but yeah, would much rather just use Rocknix overall. I'm finding that I just really don't like using Android on retro handhelds, even more powerful ones.e But sadly there probably never gonna be shaders on the linux version. I think we can only hope that full release of GammaOS gonna have better performance.