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Troubleshooting

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My game crashes on launch/stuck on "Starting System Process"

Could be due to many things, the most common of which are:

  • amdaemon crashing in the background. Make sure that the config_*.json files have valid syntax, your ICF files are correct.
Capturing logs from amdaemon for troubleshooting

To assist with troubleshooting, a script can be used to capture logs from amdaemon. Create a file named amdaemontest.bat in App\bin, then paste the code block below into the file.

@echo off
cls
echo Attempting to run AM Daemon ...
echo Window should close after 30 seconds
echo Log will be generated at amdaemontest.txt
call :sub >amdaemontest.txt
exit /b

:sub
pushd %~dp0
start /b "AM Daemon" /min inject -d -k mu3hook.dll amdaemon.exe -f -c config_common.json config_server.json
ping 127.0.0.1 -n 31 > nul && taskkill /F /im amdaemon.exe

Double-click it to run. The script should run for 30 seconds, and you will get a file named amdaemontest.txt in App\bin, which you can send to help people troubleshoot your issue.

My game is stuck on a black screen at launch!

This could also be due to many things, the most common of which are:

  • You have one or more incorrect/broken DLL(s) in App\package\mu3_Data\Managed

    This is likely to be Assembly-CSharp.dll, Assembly-CSharp-firstpass.dll, and/or AMDaemon.NET.dll. You can try replacing the DLLs or re-downloading data from elsewhere.

  • An ill-formed keychip is defined in segatools.ini

My game is running too slow/fast or the notes are out of sync!

The game could be running under or over its required refresh rate.

  • Make sure V-Sync isn't disabled in your graphics settings (called "Vertical sync" in NVIDIA Control Panel and "Wait for Vertical Refresh" in AMD Control Panel.)
  • Limit mu3.exe to run at 60 FPS using a tool like RivaTuner or a patch.

It could also be that your computer's performance isn't good enough to keep a steady framerate.

My lever controls aren't working!

You may need to calibrate your lever.

From the TEST MENU select レバー設定 (LEVER SETTINGS) and then move the lever left to right ensuring that the game detects the full range of motion.

Then save by selecting 終了 (EXIT) and then 保存する (SAVE).

My game is stuttering

For NVIDIA users, create an override for mu3.exe in NVIDIA Control Panel and change "Power management mode" to "Prefer maximum performance".