I may have fixed my problems… Maybe all of them. (Glowforge-related only. 
)
I changed wireless channels and everything started working GREAT.
Let me explain… As a network engineer, I chose my wireless channel very carefully as it has the least traffic surrounding me (from neighbors). In the 2.4GHz range, Channel 9 was the quietest. I’ve been using that channel for a long, long time. About once a year I even test again to see if anything’s changed (neighbors get a new router?). Last time I had a Glowforge issue (about a month ago) I tried changing channels but it didn’t help so I put it back. Last night I decided to try that again. This time I didn’t check wireless heat at all… just arbitrarily picked Channel 6. No joke, within seconds of doing that the 'forge finished calibrating (had been sitting there not calibrating for like 30 minutes). Ran a few jobs without issue! Could it be my 'forge just doesn’t like Channel 9?!?! Could it be all 'forges don’t like Channel 9? Who knows. But I guess I’m sticking with Channel 6 (even though one of my neighbors is clearly using the same channel!).
Please, Support, don’t consider this closed. I’d still love to know what you’re seeing ion your end.