Hi,
Did this resolv in any luck with the TAC-Case?
We have exactly the same problem and had TAC involved without any luck.
They basically did what you said here. All accesspoints except AP-305 works well in 2.4ghz.
We've changed from AP-105 to AP-305 for all our customers and all have problems. If we change back to AP-105 its all fine.
Dont really know what to do next. Seems lika an issue when IAP-305 gets connected to a controller.
So if you have any news, please share. Thank you!