I am very glad someone brings this up, finally. What satin says, I can only echo it. A character of mine, Sei, comes from Xanu Prime, a system so far away from Tau Ceti I cant even imagine it properly. Yet I sometimes let her visit her sister, back home. (Its one of my ic explanations why I didn't play her lately again)
Thankfully no one ever questions the fact that she is not actually like, months gone, which she should be for the two way trip alone.
Tldr, travel times should be much faster, otherwise everything falls apart. It's like in Pen and Paper. Travel times are something small but give actual....dimension and scale to any map and world. It's small but important to wrap your head around this and figure out what works best.