u/FurankuNishi

I'm using X-Mouse to map the shift key to the mouse 5 button while playing a game to sprint with M5, and it worked, but it's like it only halfway presses the shift key or something, as my character will sprint, but only at half speed.

I thought you were either pressing the shift key or not, so how does having sprint on M5 make them half sprint (jog)?

Can anyone help me fix this issue with X-Mouse?

In X-Mouse, I have M5 set to simulate {SHIFT} and set to option 7 (repeatedly until button is pressed again).