Looks to me like you’re losing steps in X and Y directions. If your V-wheels are good, check your pulley setscrews to make sure they are full seated and one is centered in the flat on the stepper shaft.
If the belts are too loose OR tight, they can cause you to lose steps. You may also be losing steps because of improper potentiometer settings. I’ve made 2 videos to address these issues, you may want to give them a look: X-Carve Maintenance/Troubleshooting Videos - Add Your Own!