Preasure advance too high?
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I've noticed that tuning pressure advance for each different filament makes a huge difference. The Prusa Minis I'm in charge of would leave huge gashes on seams until I tweaked pressure advance for that particular filament. Orca slicer has nice calibration tools for that.
Here's how it looks on a print auto focus wouldn't let me get a clear shot btw
Check your "coasting" settings - if it's turned on, try turning it off or reducing the value since it can cause exactly those fisures at the z-seam when set too aggressively.
I feel like, at this point, there's little use in using Cura other than mere familiarity at this point. My understanding is even OrcaSlicer's algorithms tend to produce better prints with extremely similar settings.
Hope you find the solution in Cura, but have you considered Orca at all?
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