This happens if you set vJoy to 128 buttons and another app polls it excessively. Reduce buttons to 32 in vJoyConf.
It takes data from "feeder" applications and translates them into joystick signals. Device Emulation: It can simulate up to 16 separate devices simultaneously. Configurability: Each virtual device can support up to 128 buttons 4 POV hat switches Key Features of Version 2.1.8 vjoy 2.18
: Fixed a bug where non-default registry values for POVs were ignored. This happens if you set vJoy to 128
Supports up to 16 independent virtual joysticks simultaneously. Device Emulation: It can simulate up to 16
If 2.1.8 fails on Windows 11, try running the installer in Compatibility Mode for Windows 7.
If you need to remove vJoy for any reason:
Excellent for remapping keyboard/mouse actions to vJoy axes, or splitting a single physical controller into multiple virtual configurations.