I used Transformer when I was in college in the fall of 1986. I used it to do my Turbo Pascal stuff, perhaps some C as well. It was slow as a dog but it got the job done.
At some point I want to take a look at transformer, and figure out how good their code is.
PC task, with it's dynamic recompiler, would leave it for dust. But that came around when people had far more ram.
While transformer seems to only work on 68000 Amiga's with up to 512k of ram. So they might have had a scarcity mentality and written the code badly, or missed some basic optimizations.