You are under the impression that the premium subscription changes the speed of the machine
The premium subscription only speeds the file preparation, (I hardly notice any difference) the operational speed of the laser itself is the same for everyone, just as it ever was.
Let me guess, someone in the FB users group is bellowing about how unfair it all is.
There has been significant improvements in accuracy of placement, do you know about the calibration tool?
It improved placement by eyeball so we’ll on mine I can drop a file on material with millimeter accuracy.
After 6 years on the forum and 4 years with a machine, I don’t recall any promises of speed improvement.
You should verify any information about your laser you get elsewhere online by checking here for accuracy, this is the official glowforge site.