Surface Pro 3 Slow WiFi - 72Mbps Max (driver)

I didn't uninstall an update. I only uninstalled the drivers you mentioned above. Make sure you don't have Windows set to automatically install updates.

One other thing I noticed with the wireless routers...

During my troubleshooting efforts I grabbed a WD N900 router. Both routers (Airport Extreme & N900) were configured to have the same SSID for both the 2.4 GHz and 5 GHz networks. By default the Surface is connecting to the 2.4 GHz network and seems to max out at 72 MB/s.

Try giving your 5 Ghz network a different name and connect specifically to that network. It was at that point I saw the faster connections to both routers.

Hope this helps!

I uninstalled the battery, A/C, and wireless drivers and none of the symptoms were alleviated after a reboot.

I think the problem likely has more to do with the update you're referencing. Could you please tell us which update Microsoft had you uninstall?

Thank you.

I just got off the phone with Microsoft support. There is an issue with an update which was installed after my purchase. He had me uninstall three adapters; wireless, battery, and A/C. After a restart the drivers are installed automatically from the local drive (like they were out of the box). 

With my Airport Extreme I am able to get a 833 MB/s connection. Through Windows Update I can see there is an 'important update' available dated 6/19. It's labeled as an updated related to the hardware. I'm not sure what all drivers are updated with this install, but obviously I will avoid it until they provide a new update (post 6/19). 

If you have windows to automatically install important updates you will likely have issues. Windows will continue to install the 6/19 update which is causing the issue.

Thanks for updating us.

I just got off the phone with Microsoft support. There is an issue with an update which was installed after my purchase. He had me uninstall three adapters; wireless, battery, and A/C. After a restart the drivers are installed automatically from the local drive (like they were out of the box). 

With my Airport Extreme I am able to get a 833 MB/s connection. Through Windows Update I can see there is an 'important update' available dated 6/19. It's labeled as an updated related to the hardware. I'm not sure what all drivers are updated with this install, but obviously I will avoid it until they provide a new update (post 6/19). 

If you have windows to automatically install important updates you will likely have issues. Windows will continue to install the 6/19 update which is causing the issue.

I've also been getting very slow wifi speeds (6-12 Mbps) where other pcs are performing at 300Mbps

Internet speed tests on the surface pro are under 5Mbps while I get the expected 105mb or better with my other PC.

Stability improved after disabling Bluetooth on the surface pro 3  but that is far from an ideal solution. I'll try the rollback mentioned here.