I have a persistant problem that I cannot seem to rectify. Doing TRT's with CD/DVD Speed on any of my drives produces a very choppy arc. This started a couple of weeks ago so I went about trying to troubleshoot. What I have tried;
Reformated and reinstalled Windows XP Pro. I have a dual boot system with XP on one HD and Vista Ultimate on another. Not running raid. As you can see from my sig 3 Sata drives (Nvidia Sata controllers) and 2 IDE on MS standard drivers. Doing scans on either HD produces the same result. Ran Memtest thinking maybe Ram but ran for 20 hours with no errors. Ran Seatools on both HD's and found no errors. This system is fairly new (I built this past spring). Defragged both drives and also ran check disc, no love here either. I also ran a TRT in safe mode with the same choppy, if not worse results. The disc quality tests all come in at 95% with low PI and PIF. The dvd's are all playable with no visible problems. I've attached some scans but trust me some are worse than others. My assumption at this point is perhaps hardware related but am open to any suggestions anyone can lend.

It's a known issue with 4.7.7.15. It will be fixed in the next version.

Thanks for the info. Much appreciated.