[PCW_MESA]

if you are going to accuse something of being a "myth" quote EXACTLY what you are contesting, not a whole post making several different points.

The way Gecko works is consistent with the graph I liked above. It is not black and white issue. uStepping is helpful at low rpm and detrimental at high rpm.
Attachment 387100

Simplistic statements in either direction are inaccurate and only partially true.

Since when was this topic about anything but low speed torque?

For low speed motion (The OPs topic) There is no question that higher microstep ratios improve torque.

You stated originally an unqualified "Micro-stepping will cost a lot of lost torque."

This is absolutely a myth (probably based on a misunderstanding of the difference between incremental and stall torque )
And worse, unhelpful to solving the OPs issue

[reg.miller]

My initial unqualified comment was partially incorrect. It was an over simplification , not a "myth".