VTuber Maker is the #1 free, simplistic, and 3D Tool for VTuber Content Production, just with a webcam.
Fix the problem of virtual camera causing unresponsive Video Capture of OBS, the steps are as follows.
1. Open Setting->Device in VTuber Maker, then find the Virtual Camera Uninstall button at the bottom, click Uninstall.
2. Click the Install button to reinstall the virtual camera.
3. Restart obs studio.