I hate to add to all the gloom, but, I have yet to see a Support mission, even in a system in "infrastructure failure". Really, I'm NOT in to spending hours/days trying to make a faction like me enough to throw me a mission or two, but there aren't even greyed out missions. There's just none that I've seen, and I'm not going to spend hours flying around trying to dig them up.
The FPS in the stations I've been in are at 60-70 and drops to around the 50s close to the bar, slightly better for me (HP Omen, i7, GTX1070). But I'm going back to American Truck Simulator until this dust settles and the Support missions start working again.. Disillusioned I guess, again.