NEW: aquaero 5 series

[Church]

Eeeaugh: Hmm, so by reading that it seems that it's not exactly that keyboard is culprit, but indirectly rised by it usb polling rate. Hmm, can you seek which usb ports on your motherboard are provided by another usb controller then one you have connected your gaming keyboard to and try using AA5 from it?

Shoggy: imho AA5 -> for LC -> at least 4/5ths of customers are gamers, and with hi-end gaming hardware, as they had went to LC. Probably lot of them using gaming keyboards and gaming mouses, from which very many if not most of them use high port polling rates. Heck, i even remember in reading in few reviews of mouses where reviewers complained about not high enough rate, not fit for gaming. So that might be very common issue/configuration, and imho such configuration to work with should be added to AA5's firmware. Yes, i understand that you have made both hardware and software according to specs (eg. usb prototcol ones), but in real world there may rise interworking issues among different devices by different vendors that have to be worked around by each vendor (and probably most other usb product vendors do), even more so if configuration is common to targeted buyer market niche.
As temporary fix you might test if my hunch about moving elsewhere where AA5 is connected to can work, and if it does fix, publish note in both AC/here and other forums (+on website), for users to fix temporary issue, and meanwhile develop/extend firmware functionality to be able to work with non standard polling rates. I'm guessing about possibility of fix from different usb ports from reading old AA4 threads, were it sometimes helped on few asus boards, where it was if few usb ports were provided by chipset and few others by 3rd party (IIRC NEC) extra controller.

Eeeaugh: and regarding that forum you posted your link to .. please, cut some slack for AC guys, and give them a bit more chance to fix things. I understand your frustration, but placing it onto them WON'T make things fixed faster, they themselves wish to make or fix good product, and loud swearing/whining/accusations won't help anything but your relieving stress. They too are humans, please be polite to them. Communicating in professional & calm way is not that hard and definitely is well liked by anyone on other side.