You're saying you can speed up but it won't unless you throttle down, but you can forget time is sped up so when you throttle down it suddenly light-speed smashes you? I suggest leaving that on their forums or something - That looks WAY too easy to accidentally do, there should be some prevention.
I'm saying, just in-case I said it wrong, that I can't time-warp anything more than 1x if my throttle is up, doesn't matter where it is (not counting all the way down.), and I was too impatient to make it to orbit so I throttled all the way down, sped it up, looked at the orbit map, and it ended up making the manned-rocket-satellite crash.
tl;dr: i want it to be sped up while the throttle is up in space, and even then it lets me use the time warp while i'm not in space and the throttle is up.