Lashes in the XY axis. HELP please.

Hello, I have a problem when printing with my K1 SE. I have been looking for the solution in videos and forum topics and I have not found it.

When I print, especially with large parts, at some point, the XY axis shifts. I’ve seen it done and it’s like whiplash.

One of the solutions I tried was to tighten the XY axis straps following a tutorios, the tension of the belt. I also tried greasing as recommended in the instructions. And it hasn’t solved it.

I will show 3 example photos.