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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

    FPS Drops while emulating Master System on 3B+

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    fps drop raspberrypi 3b+ retropie master system emulation
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    • B
      Biquet
      last edited by

      Hi,

      First and foremost

      Pi Model or other hardware: 3B+
      Power Supply used: Stock
      RetroPie Version Used (eg 3.6, 3.8.1, 4.1 - do not write latest): 4.5.1
      Built From: Pre made SD Image
      USB Devices connected: PS4 controller V2
      Controller used: PS4 controller V2
      Error messages received: none
      Log found in /dev/shm/runcommand.log (if relevant): /
      Emulator: lr-genesis-plus-gx / lr-picodrive
      Attachment of config files: /
      How to replicate the problem: /

      I just got my 3B+. Installed retropie right away and decided to start with Sega Master System emulation. I noticed some FPS drops when playing Astérix (when destroying blocks). I then played Sonic the Hedgehog. I tried both cores (picodrive and genesis plus gx), picodrive gets less FPS drops but sound is choppy and with genesis plus gx, the second level is literally unplayable.
      I've tried on both a Full HD and 4K monitor.

      I'm hoping I'm doing something wrong because it would be a real bummer if the most powerful pi couldn't handle Master System emulation.

      Thanks in advance!

      wmarcioW thestargliderT 2 Replies Last reply Reply Quote 0
      • wmarcioW
        wmarcio @Biquet
        last edited by

        @Biquet hi...
        I cant reproduce your problem, but you can try this:

        https://github.com/RetroPie/RetroPie-Setup/wiki/Speed-Issues

        1 Reply Last reply Reply Quote 0
        • mituM
          mitu Global Moderator
          last edited by

          I don't think a 3b+ is powerful enough to drive a 4k display - but 1080p should be easily handled without slowdowns by a Pi 3B+.
          Can you get a detailed log from running the game by enabling verbose logging from the Runcommand launch menu and then uploading the log file (/dev/shm/runcommand.log) to pastebin.com ?

          B 2 Replies Last reply Reply Quote 0
          • thestargliderT
            thestarglider @Biquet
            last edited by

            @Biquet premade SD? As in bought online?

            Starglider!!! From Rainbird!!!

            B 1 Reply Last reply Reply Quote 0
            • B
              Biquet @thestarglider
              last edited by

              @thestarglider A standard Samsung SD.

              1 Reply Last reply Reply Quote 0
              • B
                Biquet @mitu
                last edited by

                @mitu Will do as soon as I'm home again.

                1 Reply Last reply Reply Quote 0
                • B
                  Biquet @mitu
                  last edited by Biquet

                  @mitu Sorry for the late answer.

                  No runcommand.log gets created when I launch with verbose (which your link doesn't explain btw). Looked in \retropie\configs\all\emulationstation\tmp because can't find the /dev folder your talking about.

                  Thanks for taking the time to help btw.

                  1 Reply Last reply Reply Quote 0
                  • mituM
                    mitu Global Moderator
                    last edited by

                    You need SSH access to the system to get the /dev/shm/runcommand.log file, because it's not available through file shares.
                    As for enabling Verbose mode, it's right there in the Runcommand launch menu - you can't miss it.

                    B 1 Reply Last reply Reply Quote 0
                    • B
                      Biquet @mitu
                      last edited by

                      @mitu Om I found the verbose launching option. The SSH part is the problem. I'll update whenever I can (probably weekend).

                      Thank you

                      1 Reply Last reply Reply Quote 0
                      • B
                        Biquet
                        last edited by

                        It's been a while.

                        I've added the ssh folder in the boot folder of the microSD (could only access that folder?), as explained. I've run the game with verbose logging. Can't seem to find that /dev/ folder anywhere.

                        I'm sorry.

                        mituM 1 Reply Last reply Reply Quote 0
                        • mituM
                          mitu Global Moderator @Biquet
                          last edited by

                          @Biquet Did you install WinSCP and logged in via SSH on the PI ? The folder is accessible only if you login that way.

                          1 Reply Last reply Reply Quote 0
                          • B
                            Biquet
                            last edited by

                            Oh, no I didn't.

                            Will try the next time.

                            Thanks for sticking with me.

                            B 1 Reply Last reply Reply Quote 0
                            • B
                              Biquet @Biquet
                              last edited by

                              @Biquet said in FPS Drops while emulating Master System on 3B+:

                              Oh, no I didn't.

                              Will try the next time.

                              Thanks for sticking with me.

                              Another question: Once I've done that. Where would I be able to access said folder?

                              1 Reply Last reply Reply Quote 0
                              • B
                                Biquet
                                last edited by

                                Ok found it.

                                https://pastebin.com/8PQnc8XU

                                This is the log of Asterix. I have problems with Sonic too. Do I need to upload a log for that one too?

                                Alex Kidd in Miracle World, the Lion King, Daffy Duck in Hollywood all run fine.

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

                                  [INFO] Threaded video stats: Frames pushed: 10061, Frames dropped: 1.

                                  that implies full speed to me. are you sure this isn't accurate emulation? a lot of games had slowdown on real hardware. you could use youtube to verify.

                                  1 Reply Last reply Reply Quote 0
                                  • B
                                    Biquet
                                    last edited by

                                    Yeah. I guess you're right.

                                    1 Reply Last reply Reply Quote 0
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