Sigh.
Yeah, I know. Even though they never have been (in either case) the sand grains at near-c they’ve been flanderized to be, back in the design phase – as reflected in early usage – I made the same error the Mass Effect writers did. And it’s a bit late to do anything about it now, seeing as it’s published canon.
So… let’s just say that they’re a little bit bigger and slower than they might have been, and pay no attention to the hand waving behind the curtain, m’kay?