Just received my Silver Alt keyboard today and have installed my new Matt3o MT3 /dev/tty key cap set for this keyboard.
Basically it's HOT.
Best looking keyboard and out of another parallel universe, all the Stabilizers actually work. No sticking or slow down when the larger keys are pressed. This would be the very first keyboard received from them that did not have any stuck or sticking stabs.
Looks like MassDrop finally listened and provided decent, working stabs - that do their work.
No whining from me today, all's GOOD ; )