Updated in case anyone needs this in the future - we used Firmable and purchased directly off of Firmable (AUD5000+) and the mobiles seemed of high quality.
The train has left the station. I figured it out and delivered it to the client. Are you guys overwhelmed on Support or what's the reason it's so slow?
I have tried all of those things many times. In the end I just gave up on that column, duplicated it and filtered to where the problem column has no results, then ran the 2nd column.
...and if i go 'Home' I can see the table is still running, but when I go to the Table none of the columns are running. Quite confusing and frustrating - it's holding up a big project.