Hi. As you can see in 1st video, it moves super smooth when unarmed (no belts).
But when I rig belts and move under the power - then it’s just as you describe. It stops for a tiny amount and then goes again.
Steppers don’t stop. It’s just like something is holding the gantry and it tries to overpower such invisible obstacle in order to continue moving.
If you mean second video then yes - I suspected that it will not show much. But believe me, it’s not moving well.
Well, I disconnected LCD screen without any effect.
Now, I did a research. I removed another axis’s pipe leaving only the pipe with most obvious effect. Movement was to some extent smoother but not much. Jerking was evident.
Back to fully rigged state: when moving slowly and jerking - I hear irregular sound of steppers which in it’s irregularity totally correlates with jerking pattern. Increasing speen to somewhat 1000mm/min effects in smooth sound from steppers and smooth movement of all parts.
So far I didn’t understand whether it’s a problem coming from steppers or from friction of moving parts.