Reply To: Best possible input lag with retroarch?

[MattRigg]

Hey dankcushions! Ok, cool. I’ll have another fiddle around with it at some point and see what happens.

Out of pure curiosity, I ended up downloading the RT kernel Raspbian that furntree mentioned, compiled RetroArch using his custom flags then proceeded to download/compile FCEUmm and see what happens. Performing the same SMB3 test I did in my other post I ended up shaving 1 or 2 frames off the input lag (mostly 2, sometimes 1, but this could’ve been a camera/TV refresh problem – my test isn’t exactly scientific!).

While that brings my lag down from 9 frames to 7 (or, 7 to 5 if you deduct the 2 frame lag my TV causes), it’s still a couple of frames off what furntree has accomplished. Granted, I’m testing a different core and I’m not exactly sure what his setup is. This is why I wanted an image of his SD. Firstly I’d want to run my own test using his setup. Secondly, it’d be interesting to use his setup as a starting point then, working backwards, start changing the settings to match my own and see which (if any) start causing lag.

btw, you’ll have to excuse my lack of knowledge on all of this. I’m still relatively new to the world of Linux. I’ve completed a few other Linux-based projects (NAS server, Hyperion box etc) but they were all mainly just a case of copying/pasting commands and hoping for the best!