It probably takes several days, if not weeks, to travel between relays, even with FTL drives. The games just don't want to show you the harsh realities of fake space travel as you're going around saving the galaxy. It's hard to feel pumped for stopping Saren by going to Ilos when you're having several awkward, tense meals in the mess with your crew, and then you have to deal with Garrus using too much toilet paper and backing up the men's john, and then you have Liara spending days plucking some dead flower she got from her last shore leave, plucking pedals as she's working up the nerve to go bone Shepard. "He loves me... he loves me not... he loves me..."

"Liara. We'll bang, okay?"