This worked for me and solved a very frustrating issue where my client would hang when I clicked login, when selecting my character, and a few other random points.
Here's a way to create a short cut that automatically does this.
1. Right click the MabiProLauncher exe and click "Copy"
2. Paste a shortcut on your desktop or wherever else you want it
3. Click the the short cut and click properties.
4. In the "Target:" field, paste one of the following commands I'll list below.
If you have 12 logical cores => cmd /c start "MabiPro" /affinity C00 "MabiProLauncher22.exe"
If you have 16 logical cores => cmd /c start "MabiPro" /affinity C000 "MabiProLauncher22.exe"
If you have 20 logical cores => cmd /c start "MabiPro" /affinity C0000 "MabiProLauncher22.exe"
If you have 24 logical cores => cmd /c start "MabiPro" /affinity C00000 "MabiProLauncher22.exe"
If you have 28 logical cores => cmd /c start "MabiPro" /affinity C000000 "MabiProLauncher22.exe"
If you have 32 logical cores => cmd /c start "MabiPro" /affinity C0000000 "MabiProLauncher22.exe"
You can find your number of logical cores by following the original guide or just checking here in task manager.
