On a tablet, if the pen cursor does not move or jump to a certain corner, or moves very slowly, it can be for a variety of reasons. 1. You can try uninstalling the tablet driver if you have installed it and only keep the opentabletdriver. 2. Update opentabletdriver, most likely this can solve the problem. 3. Turn off Windows ink. 4. Uninstall VMulti and Reinstall it.