Once upon a time, back in the Windows XP days, the Intel storage driver could deliver slightly better performance than the stock driver. This is no longer true and hasn't been since the release of Windows 7. So long as you install the Intel Chipset Device Software (a.k.a. INF Update), which optimally configures the stock driver for Intel chipsets, you are good to go.
Hope this helps,
I might just be dense but when you say "stock driver" are you referring to the Microsoft Windows 10 driver(s)?