Printing position sudden shift

Hi all

I’ve been struggling to print this file and this has occurred on some other prints too. The printer seems to suddenly go way out of position and ruins the print. Things I’ve tried on my Creality KC1 printer so far is to tighten the belts, update to most recent slicer Creality software available (which when i did initially seemed to fix the problem) but now its back.

Not every print is going wrong but this print has now failed 3 times at around the same point.

Any ideas folks where i should look next???

Thanks in advance

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I’m having the same trouble trying to print a gridfinity case that is nearly bed-max size. It’s failed 3 times, with 2 different filaments, at about the same layer, using Creality Print 5 and 6, and it’s driving me crazy. The first two times, I heard a loud CRACK sound when the layer shift happened.

Same thing in my case. Any clue how to solve this?