The .dll comes pre-packaged with a community-sourced database of over 1,200 controller configurations. If you plug in a "DragonRise Inc. Generic USB Joystick," the emulator likely already has a tested profile for it.
Solution: You are mixing 32-bit and 64-bit components. x360ce VibMod 3.1.4.1 has separate .exe files for x86 and x64. Ensure you placed the correct version in your game's folder. Need 64-bit? The file name should explicitly say x360ce_x64.exe. x360ce vibmod 3.1.4.1
Unlike vanilla x360ce, the VibMod 3.1.4.1 wizard will ask: Unlike vanilla x360ce, the VibMod 3
Allows swapping left/right motors (useful for miswired generic controllers) and mirroring both motors to a single physical actuator. Unlike vanilla x360ce