The problem reportedly occurs once the Surface Pro 3 resumes from Instant Go while running on its battery, with the speeds of 802.11ac and 802.11n connections slowing to a crawl after the Surface Pro 3 wakes. A ZDnet report tested this issue using multiple routers from a variety of firms, including Linksys, Belkin, and Asus, and concluded that the problem wasn’t rooted in external networking hardware. A commenter on this Microsoft forum thread reported that manually disconnecting from, and reconnecting to their Wi-Fi connection fixed the problem for them.
However, that’s not the only issue between the Surface Pro 3 and the new software. Other users are reporting a variety of problems, including blue screens of death, and more.
One possible solution requires you to manually reinstall the driver for the Marvell Avastar Wireless-AC Network Controller from the original set of drivers and firmware. However, this isn’t guaranteed to work for every Surface Pro 3 user, so don’t expect this to be a fool-proof fix.
Microsoft has reportedly been mum about these issues to this point. However, when past firmware-related problems have cropped up with the Surface line, Microsoft eventually released new firmware designed to correct those problems.
The Core i5 version of the Surface Pro 3 hit the market on June 20 – the day after this problematic set of drivers and firmware were released. The Core i3 and Core i7 variants are available for pre-order now, and will begin to ship starting August 1.