There is something more nefarious happening with my hack. I am able to boot into Windows 10 on the same machine and have zero connectivity problems. Super fast browsing speed and general network traffic. Therefore it can't be a hardware issue.
I am writing this right now booted into Win10. Using Speedtest.net I get nearly full 100Mbs up and down. When booted into my hack I get a little less down but upload speeds are down to .5Mbs or less!
I also uninstalled your kext and used Lnx2Mac's old .90 version. Same if not worse behavior with my hack.
Now that I've ruled out a hardware issue, and it seems neither kexts are the issue at all, I am at a total loss of where to go next. Any clues or help would be appreciated.
Can Clover version be at all the issue? I might try to go back several versions and see if that changes things.
Check your BIOS settings again. According to your board's manual there is a "Green LAN" option which shuts down the LAN when there is no activity. It might be the root of the issue.