I've had the same problem. The sublight travel clock starts looping at 0 hours 02 mins. It goes down to 0, then back up. Once it jumped up to 20 minutes. I'm currently trying to leave a system in the Hapes Cluster.
I've been having the same problem since I first joined...I find that sublight and surface travel tends to take several minutes more...and hyper can be as much as an hour more, but once I arrived a half hour early....I have no idea why it happens, but as for it happening during hyper I find it interesting, kind of like IC hyperspace phenomenon.
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