I have Streaming ticked in functions and no...my Pioneer BDR-205 is installed on SATA 2.
I have two WD Velociraptors in RAID 0 on SATA 0 and SATA 1. The Pioneer is on SATA 2 and I have an LG BD Reader DVD Writer on SATA 3. My burn speed with Nero DiscSpeed is normal for Phillips BD-R, and funky toward the end on Verbatim. Everything looks pretty bad using Opti Drive Control either 1.50 or 1.51. Don't think that Opti Drive Control is good for writing, just reading. Sorry I spent the $$$ on it, for it seems that it is dire need of an update. Burns and reads DVD great...BD-R, not so good