Microsoft advised users against installing the Windows 10 Insider Preview on the Surface 3, citing a lack of official drivers for the Intel x5/x7 Atom processors. For those that installed the preview, the Redmond giant is now rolling out pre-release drivers via Windows Update.
From Microsoft's support website:
We have a pre-release Windows 10 driver set for Surface 3 published to Windows Update. If you have installed Windows 10 on your Surface 3, please visit Windows Update and install these drivers.
The driver set — which contains drivers for the CPU as well as the integrated Intel graphics — should make things run that much smoother. If you've got the Windows 10 preview installed on your Surface 3, let us know how things are going with the new drivers in the comments.