I rememeber that !
'85, my boss wanted me to use one of those Trash 80s to test page printers I was repairing.
It was so slow it wouldn't fill the buffer, yes, so slow it couldn't outrun an ancient dot matrix printer.
I ended up bringing in my PC-XT clone, but even that wouldn't go fast enough running basic.
That's when I discovered Forth - fast and flexible, did the job with ease.