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beatmania IIDX 31 EPOLIS

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My game crashes on launch!

Could be due to many things. The most common of which is you need to patch the DLL for your game with Force Audio Output Mode set to WASAPI or ASIO. Also see the audio section in the setup guide.


My game is running too slow/fast / Game gets stuck / Monitor error at boot / Error 5-1503-0043

Potential causes:

  1. The game could be running over/under its required refresh rate (60 for LDJ, 120 for TDJ)
    To solve this, make sure v-sync isn't disabled in your graphics card's settings. For NVIDIA users, enable NVIDIA profile optimization (-nvprofile) in the Options tab.
  2. It could be that your computer's performance isn't good enough to keep a steady framerate.

I'm having performance issues / my FPS fluctates!

If you're having performance issues of some kind, spice2x's PC optimization guide is worth looking at. If none of that works, your PC probably isn't good enough to run the game, sorry.


Unable to login / Eamuse error / Network error

Get the proper Asphyxia plugin from our Discord server in the #iidx channel > Resources post. Make sure you didn't enable -smartea in spicecfg's options.


How do I set my offset?

Play through a chart you're comfortable with.

If you're getting too many Fast, increase your offset (+).
If you're getting too many Slow, decrease your offset (-).


My inputs aren't working / I can't get past error messages!

If none of your inputs are working, try updating spice2x, you can also try using the beta versions if the stable releases don't work for you.


My game audio is super quiet!

When using TDJ mode the audio is very quiet by default. To mitigate this, you can use the Increase Game Volume patch.


When I run the game all other audio is gone!

IIDX uses WASAPI exclusive mode for audio to get better audio latency.
Unlike former versions of the games which used DirectSound.

You can use the Shared Mode WASAPI patch to hear other apps while the game is running, at the cost of some audio latency.


I'm not getting any audio, or my audio is completely wrecked and I'm using an External Dac!

Many setups have found some difficulty with audio due to various equipment being used. Consider using the Shared Mode WASAPI patch.