Currently Being ModeratedDec 31, 2012 8:46 AM (in response to Bjolle)
There's nothing that you can do on the ATV or MBA end to improve the throughput of the connection, there's no settings or adjustment everything is automatically negotiated. That being said there are numerous threads across all the portable sub-forums with user reporting identical problems: Portable laggy, iOS device not laggy.
These movies you're attempting to stream, are they not in iTunes? If they're in iTunes why not use the Home Sharing of iTunes option?
You can try some router adjustments, making sure it's set to 5GHz (if your router is new enough to support that) try adjusting channels, moving the machine closer to the router, reducing router transmission interference in the immediate area, etc.
There's also the method of wiring the AppleTV to the router via Ethernet or the machine to the router via Ethernet to improve throughput on one of the two ends.
Currently Being ModeratedJan 1, 2013 4:39 AM (in response to JasonFear)
I guess I will have to use wires then. It's a pity that the new expensive computers perfomance is less then the old ipad though.
Maybe I can hope for an IOS X update that solves this problem in the future.
Anyway thanks for your reply.