CustodianV131: Wrote Kalypso support about it and they wrote back that they are in contact with Microsoft about the issue. Still it has proven to be a hard bug to fix and they can not give a timeframe.
jorbuc: If that's what they told you, they've been dishonest with you.
Hard bugs to fix are intermittent bugs; ones that take lots of repetition and diligence to catch. This one is constant, repeatable and predictable. Proper debugging software will indicate exactly where the system is hanging. It's exactly not rocket science and it certainly shouldn't take competent developers months to find and fix it.
My blind guess is that those with the source and skills are not available to the companies involved and may never be.
I'd like to update the thread; I own the full game on both GoG and Steam. The GoG version, for me, has the same failure that everyone else is having here. The Steam version, OTOH, works perfectly. At some point Kalypso updated the game, but only on steam.
Screw Kalypso.