Lg wd80130f doesn't spin fast

Hi, my lg wd80130f does not spin fast after completing its wash cycle hence leaving clothes wet, sometimes it works if i unplug amd start the whole washing cycle again. When it doesn't spin after cycle, i can hear noise like relay is switching and light sound of motor who is trying to spin, but it can't.

From few days i let it complete its cycle and then i will go into its QC test mode and spin it from there. It works everytime but i want to fix it because if it fails to spin then it won't turn off and on few occasions (if i leave it anattended) it will keep running for overnight.