You have made my day also Klaus!! This was causing a major problem for one of our projects and I was waiting for Google to fix it, but without luck. I have just tested your fix and can confirm this works for Chrome 65.0.3325.109
It seems I cheered too early I thought the jerky effect Aladdin_VR mentioned wasn't too bad, but it turns out it is worse on some devices. I originally tested on a Samsung A5 which was ok, considering the circumstances (a bit jerky, but doable to watch). But on the Samsung S7 and S8 the jerky effect is actually too strong to be able to watch in VR This is a major problem for a large project going public next week.
How can we make pressure at Google for the Chrome update? Are there any channels they are listening to, aside from the bug reports (those I already voted for)??
Thank you for the updated files Klaus! Handy to have the unit change already prepared/ready for when Chrome 66 comes out.