Plz Help, TE stick Joystick Problem

This just started happening to me and i have tested it with other joysticks so i know its the TE stick that has a problem. Whenever i press forward or back or down or up, if i just press them in quick succesions its fine but if i hold onto forward or down etc. for a bit longer than half a second the character moves forward or back and stays down and i cant do ne normals in the air, and they do the motions for around half a second to a second. Please help cuz i would really like to fix this.