Poorly performing RAID is nearly always the result of a cheap RAID card, the lack of a battery backed cache, or too small a cache.
These issues have exponentially more impact than the RAID level.
Edit:
I have seen that there is better performance on the raid 10 so I might go that way but the HP servers need additional license to get that option.
This is not a licensed feature and you can choose to do so. However, if you require performance at a high enough level that you need to go down this path, the Storage Appliance is unlikely to be usable to you.