Significant Layer Shift on Multiple Printers

[past hearth]

I'm running RatOS 2.1-RC2 on two printers (Voron 2.4 and VCore 4) and every 10th print or so I'm getting an odd shifting of layers after printing the first few layers. I've seen the pictured issue with different models and on both printers. Any idea what would cause this?

[frigid wing]

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[past hearth]

Significant Layer Shift on Multiple Printers

[mortal mortar]

probably mechanical - so this should be in #1047083750200180797 or #1047083812875677756

[wide night]

Be sure to enable performance mode, without it you're running at significantly reduced current so if you try and do high (or just normal, depending on what you consider normal) accelerations it'll not go well.

[past hearth]

I thought that, too, but it's happening on two separate printers, one of which (the Voron) has been printing without this problem until I upgraded to Beacon and started using RatOS.

[past hearth]

Is enabling performance mode just:

variable_macro_travel_speed: 600
variable_macro_travel_accel: 8000

I don't want to overwrite my whole printer.cfg file since I've made significant changes.

[wide night]

No, use the configurator

[wide night]

You can ignore all changes to printer.cfg (read the note in the top of the diff dialog), RatOS.cfg is the important one.

[past hearth]

OK, I've enabled performance mode. Thanks for the help!

[past hearth]

Ok, that wasn’t it. It happened again today on my VCore 4. Any other ideas?

[wide night]

Check your pulleys are properly tightened down. What speed and accel are you using?

Does it happen on layer 10 on both printers?

Almost seems like a slicing issue.

[past hearth]

I thought that, but after the latest failed print I reprinted from the uploaded files in the printer's memory and it printed fine.

I'm not exactly sure which layer it happens on. I'll pay more attention next time. I'm using whatever the default max speed and accel are for performance mode on the vcore (600/8000, I think). The default quality profile in the slicer).