How to play PAL games with the correct speed?

Libretro Lakka
#1

Hi there. I just installed Lakka on an old Atom based Nettop and it runs fine so far (NES, Mega Drive, SNES and the like). However I noticed that PAL games (tried it for NES) run with 60Hz too, causing some of them being too fast (like the PAL version of Super Mario Bros. 1).

I found no option to set the mode to 50Hz. How do I do that, or can’t that be done?

EDIT: I found it out, I have to set “Favored system” to “pal”. When it is set to “Auto”, it seems to use 60Hz by default but does not detect the system correctly.

#2

Yes, in Nestopia UE you have to set the system to “Pal” in the core options.

#3

setting lakka to “pal” helps with the wrong gameplay-speed. but the output-refreshrate is still 60Hz (results in ugly micro-stuttering when playing pal-games). think a real 50Hz-Pal-Mode were great. standalone Nestopia (and many other emulators) change the refreshrate on pal-games automaticly to 50Hz-Output (if available for the used display).

#4

Does the sluttering also happens when you force the refresh rate to 50 in the video settings?

#5

For me, I have not yet noticed any micro-stuttering, but there is another strange behaviour: the A/V latency gradually grows on 50Hz games. Maybe this also has to do with the filters/shaders. You can try it the following way: Load up Super Mario Bros. 1 in the European version, set the video mode to PAL, set Blargg’s NTSC Filter to Composite and load the CRT-Caligari Shader. If you then play for some time, you notice that the A/V goes out of sync gradually. It starts nicely synced but after about 5-10 minutes of play, you can have delays of up to one second.

#6

when i force 50 Hz Output (by setting this in video settings) and changing the Core Option to “PAL” all is fine (no microstuttering). but i had to change it back to 60 Hz every time and setting it in 0,0001 Hz-steps (50->60 / 60->50) is not very comfortable. I Think a"cool 50/60 Hz Switch" in the Core-Option or an autoswitch option can be very usefull for people with such a Pal-TV Setup.