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    Please do not post a support request without first reading and following the advice in https://retropie.org.uk/forum/topic/3/read-this-first

    Noticeable latency in some games

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    laginputcontrolsturbographics
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    • S
      skepticalgeel
      last edited by

      Converting from HDMI to VGA sounds kind of iffy. Have you tried running straight HDMI to a compatible display?

      1 Reply Last reply Reply Quote 1
      • P
        PetroRie @dankcushions
        last edited by

        @dankcushions said in Noticeable latency in some games:

        it happened in the original hardware, so also happens in the emulated version.
        i don't know about the others, but it's fairly common in arcade shooters.

        Metal Slug had this issue on Neo Geo. However on emulation you can overclock the CPU of the NG. After I tried this the game ran fine.

        Q 1 Reply Last reply Reply Quote 0
        • AndersHPA
          AndersHP
          last edited by

          I have tried HDMI but couldn't really tell the difference. But in theory you would think VGA could be an issue?
          My monitor for the build has a DVI-D input, should I get a cable for this instead?

          What about the force turbo mode? Anyone tried this?

          And how do you overclock the NeoGeo CPU? I only heard about OC'ing the entire RPi.

          My "Bubble Bobble" Themed Bartop Arcade
          My Gameboy

          DarksaviorD 1 Reply Last reply Reply Quote 0
          • Q
            qanba @PetroRie
            last edited by

            @PetroRie said in Noticeable latency in some games:

            @dankcushions said in Noticeable latency in some games:

            it happened in the original hardware, so also happens in the emulated version.
            i don't know about the others, but it's fairly common in arcade shooters.

            Metal Slug had this issue on Neo Geo. However on emulation you can overclock the CPU of the NG. After I tried this the game ran fine.

            how do you OC the neogeo cpu? i know how to OC raspi 3 but not neogeo CPU, thanks.

            dankcushionsD 1 Reply Last reply Reply Quote 0
            • dankcushionsD
              dankcushions Global Moderator @qanba
              last edited by

              @qanba @AndersHP
              I added neogeo overclock information to the docs:

              https://github.com/RetroPie/RetroPie-Setup/wiki/lr-fbalpha#neo-geo-overclocking

              note, i've not tested this myself. I wrote this "blind" :)

              1 Reply Last reply Reply Quote 1
              • AndersHPA
                AndersHP
                last edited by

                Cool, thanks. Will try this.

                Anyone tried the force turbo part of OC'ing?
                I read that the RPi in some games idles down the CPU to 600 MHz instead of running full speed, could this be a good way of addressing the lagging in some games, without putting a lot of stress on the system?

                My "Bubble Bobble" Themed Bartop Arcade
                My Gameboy

                dankcushionsD 1 Reply Last reply Reply Quote 0
                • DarksaviorD
                  Darksavior @AndersHP
                  last edited by Darksavior

                  @AndersHP Try the dvi input. Since it's a digital signal like hdmi. There's no signal conversion like vga.

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                  • dankcushionsD
                    dankcushions Global Moderator @AndersHP
                    last edited by

                    @AndersHP said in Noticeable latency in some games:

                    Cool, thanks. Will try this.

                    Anyone tried the force turbo part of OC'ing?
                    I read that the RPi in some games idles down the CPU to 600 MHz instead of running full speed, could this be a good way of addressing the lagging in some games, without putting a lot of stress on the system?

                    it should only do that if it's..idle :) the run command has a setting 'cpu governer' which you can set to 'performance' which achieves the same thing i believe. since CPU isn't really a bottleneck for a pi3 i doubt it helps much.

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                    • chubstaC
                      chubsta
                      last edited by

                      Interesting about the NG overclocking - what setting have people found works best to give the optimum boost with minimum effect on sound etc?

                      Raspberry Pi 400 - overclocked to 2.3GHz
                      Theme - Comic book
                      Emulators: All of them...
                      Roms: Pretty much all of them...
                      Favourite games: Circus Charlie, Gorf, Gauntlet Legends
                      Controllers: Mayflash F101

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                      • AndersHPA
                        AndersHP @dankcushions
                        last edited by

                        @dankcushions
                        Allright, have tried a bit of testing again today.
                        I think both Donpachi and Dodonpachi, as well as Air Gallet, Armed Police Batrider, Air Duel, well pretty much every shooter I tried in either MAME2003 or FBA, has this latency issue.

                        I would think the latency is the same in all the games I tried, but some games are more forgiving than others. Also, I think many fighters are more forgiving, but I notice this especially with shooters, since you have to dodge bullets quite precisely.

                        With laggy controls, it feels like the ship is dangling on the edge of a rope...

                        I tried today on my Panasonic plasma via the HDMI and Game mode active, and couldn't tell the difference from my VGA connected monitor.

                        How do I easiest test the latency in msecs?

                        My "Bubble Bobble" Themed Bartop Arcade
                        My Gameboy

                        dankcushionsD 1 Reply Last reply Reply Quote 0
                        • dankcushionsD
                          dankcushions Global Moderator @AndersHP
                          last edited by

                          @AndersHP said in Noticeable latency in some games:

                          @dankcushions
                          Allright, have tried a bit of testing again today.
                          I think both Donpachi and Dodonpachi, as well as Air Gallet, Armed Police Batrider, Air Duel, well pretty much every shooter I tried in either MAME2003 or FBA, has this latency issue.

                          I would think the latency is the same in all the games I tried, but some games are more forgiving than others. Also, I think many fighters are more forgiving, but I notice this especially with shooters, since you have to dodge bullets quite precisely.

                          With laggy controls, it feels like the ship is dangling on the edge of a rope...

                          I tried today on my Panasonic plasma via the HDMI and Game mode active, and couldn't tell the difference from my VGA connected monitor.

                          i can get to level 3 or 4 in one credit on donpachi in lr-mame2003, which is about as good as i've ever been :) i don't know what else to say - all i do is activate gamemode on my tv.

                          How do I easiest test the latency in msecs?

                          i think you'd need a high FPS camera. record both your finger on the controller and the screen itself. there's probably a better way...

                          1 Reply Last reply Reply Quote 0
                          • dankcushionsD
                            dankcushions Global Moderator
                            last edited by

                            another thing you can do is change the retroarch video driver to dispmanx which is said to save 1 frame off the input latency. i haven't personally done this as it has some side-effects (no shaders, no OSD, no screen rotate)

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