You need connect the SSD to the SATAIII_0 or SATAIII_1(from intel) not the one (SATAIII_A0 or SATAIII_A1) you put the SSD. All the third party SATAIII drivers don't work well like the intel SATAIII.
As long as you re connect the SSD to the SATAIII_0 or SATAIII_1 then you will be fine.
Ah, haha it seems as I found out the problem as you were posting. Thank you anyways. The difference is huge!