Intel Rapid Storage Technology driver for Inspiron 15R SE (7520) with Win 10

Hi,

I have a Inspiron 15R SE (7520) with Win 10 (clean installation). The Intel Rapid Storage Technology is enabled, but the start up speed and system response is a little bit slower compared to Win 8.1. Then I update the Driver from the one provided by Dell to 14.6.0.1029, the start up and system response speed improved a lot. However, in the Derangement Optimizer, my driver is showed as SSD and I can not optimize it. Shall I downgrade to the old driver?

Another problem is the irstrtsv error shows every five minutes. It is caused by the Intel Rapid Start Technology. Is there any way to fix this issue? Probably a bios update?

BTW, Dell please update the Conexant Audio Driver for Win 10...