Got to remember aftermarket window actuators are going to be slower than actual OEM ones.
This motor just spins the manual window handle. I rarely recommend anyone buy aftermarket power windows. They just aren't all that reliable and tend to slip and/or die quickly. The SPAL brand is one of the better ones out there, but even those aren't that great.
I would try greasing the tracks and maybe even WD40 inside the crank.
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