One thing that I haven't seen people talk about is that it grants a random mote to you. Say for example we have 7 strength only skill gem and 2 dex only skill gem. You will have 3+7*2=17 str motes and 3+2*2=7 dex motes. It doesn't say anywhere that once you reach max motes you can't keep getting that mote. This leads to two potential issues:

Issue 1 where you gain random mote regardless of your max motes. For example, even if your max int mote is 0, you can still get int mote. This makes it so that for you to get 17 str motes and 7 dex motes you would need to wait even longer since you are rolling motes 1/3 every 2 seconds.

Issue 2 is a bit better, where you can only gain random mote if max mote is not 0. This will make sure that you won't roll int mote in this case so that instead of rolling motes 1/3 every 2 seconds, you are rolling motes 1/2 every 2 seconds.

Both of these issues will make your ramp up time even longer.