Ah I missed the boarding mechanic completely, but sadly I'm getting like 3 frames per second, while in space it is silky smooth. Probably a webGL thing. Being able to play it would make things a lot more interesting! It looked very nice, at least.
I don't think it's the sensitivity that is the problem (it feels fine to me and I have pretty high sens), but it might be the lack of angular drag that can slow down any spinning. Of course, this makes sense since we're in space, but for gameplay reasons it feels a bit out of control lol