Mgba core settings on ARM

Libretro Lakka
#1

I have problems with mgba core performance on ARM (OrangePI PC, Lakka 2.1-rc3). In some games I get frame stuttering, I swear I tried everything I could find to make this core running smooth. Most offending example is Fire Emblem - Sacred Stones.

VSync - on only bilinear filter on no overlays, shaders, generally plain vanilla settings

Frame rate - 59.999 to 60.002, but no visible change Frame throttle 0 or 1x, no change Frame delay 0 or 1, no change

Is there anything more I could try to make things better? I observe the same problem on other device running RetrOrangePi 3.0 with newer mgba versions.

#2

if you disable vsync/audio sync and set the max runspeed to 0, does the framerate increase? If not, that’s just as fast as it can go.

#3

It’s not that the framerate is not adequate, the game runs at full speed (compared to eg. x86_64). This looks like there is kind of frame drop(?!) sometimes. This is even more visible in Baldur’s Gate, all animations suffer.

I found couple other games with different glitches - some sprites on screen flicker (F-Zero: track map, GT Advance 3: lap timer), but I guess this is another kind of problem.

#4

No telling. It sounds like there could be a background process causing trouble. It could also be related to file I/O if you have a very slow storage medium.

#8

I run Lakka on ARM mini PC connected to TV so I can’t tell if windowed mode has any impact on my issue. I don’t see this on much more powerful Linux x86_64 laptop with Intel graphic. On x86_64 setting hard gpu sync and other options has impact on general performance only and does not induce stuttering.