Drewcifer

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  • June 2, 2019 at 11:59 PM in reply to: VP30 60HZ stutter/jitter #26465
    Drewcifer
    Participant

      I tried a 54MHz crystal and it moved the issue but still as bad, think it works out at approx 60.2 refresh. Interestingly it made overclocking the MD very stable and I didnt need to halt certain games to OC them anymore.

      Think a 53.6931 and 53.7087 MHz DFO would give perfect scrolling for both formats on the VP30.

      May 24, 2019 at 3:53 PM in reply to: VP30 60HZ stutter/jitter #26340
      Drewcifer
      Participant

        Like you say its probably due to being off (below) spec and the VP30 is inserting frames, think im going to buy a cheap pal MD and experiment with the master oscillator frequency.

        Setting the refresh to unlocked 60.8 on the VP30 is as smooth as I can get it but its still annoying, chaining the iscan pro gets rid of the judder but bumps things up to about 20ms lag, you get used to the low input lag of game mode 1 🙁

        Thanks.

        May 15, 2019 at 1:18 AM in reply to: VP30 60HZ stutter/jitter #26210
        Drewcifer
        Participant

          Hi thanks for the reply, I tried 3 TVs and one monitor so far so will test a couple more monitors.

          Weird thing is I dont get it on my iScan Pro with the same equipment, and if I switch the NTSC MD/Gen to 50hz its judderless locked with a 53.693Mhz Oscillator?

          Will try and work it out, cheers.

          May 13, 2019 at 7:43 PM in reply to: VP30 60HZ stutter/jitter #26191
          Drewcifer
          Participant

            Had a thought I could check my various sync levels and work out what the VP30 likes on the RGBs inputs.

            If that doesnt work i’ll order an OSSC.

            Thanks.

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