Try the following
1. Virus scan
2. Enable/Disable 'Enhance Pointer Precision' in mouse properties
3. Try the mouse on another PC/Laptop and check how it behaves
4. Temporarily Disable Touchpad and use only USB Mouse and check
5. Boot in Safe Mode, (both Touchpad + USB Mouse active) does the issue persist?
How severe is the jump? Are you able to click buttons / check boxes, or that's also too difficult?