I went to erevate.... There I have around 30 FPS in supercruise...still superlow compared to other systems without players. But it only drops during supercruise. When I was at some station, there were many players and it didnt lag at all.
I keep saying this all the time : Eranin!
Eranin was the starting system in Alpha / Beta and is hugely populated by players.
Heck i even saw 2 player lakon type-9s trying to get into Azeban City at the same time!