Are there 2.5GBase-T SFP+ modules?

[Biomesh]

Seems your setup should be almost the same as mine. What version of the Realtek drivers are you using? Jumbo frames? Any other notable changes? Tried various settings for hours this morning and I just can't get more than 1Gb consistently for RX no matter what I'm trying.

I am currently using jumbo frames(9000) but in my testing it didn't make any difference.

I am using the realtek driver version from may or June (don't have it up in front of me). It seems that there is a new version that was just released a few days ago that I have not tested.
There aren't any other notable changes. I always disable qos on my windows adapters though.