Thank you, but... As far as I know, all of the tested linux systems are using the latest driver. (Ubuntu and Fedora surely, I've checked)
I have to ideas, why linuxes are slower than win7:
- perhaps, the linux driver runs with enabled debugging features (I've see this somewhere in the logs, but don't remember exactly where...)
- there is no problem with wireless driver, but the IPv4 stack needs optimization.
I've been searching for a solution or explanation for this problem, but I found nothing. The most what I found was to set module iwlwifi's option 11n_disable to 8 and switch off power management (this is disabled by default)
We do understand your concern but any optimization should be done by the Linux* Team. Here are their contacts:
They can also be found here: https://wireless.wiki.kernel.org/en/users/Drivers/iwlwifi just scroll down to where it says support.