There is another place to modify the settings for your MR816 that is anything but obvious. In the folder you extracted your “Tools for MR” into, there is a folder named “Utility.” In that folder is a file named ysfwutility.exe. just double-click on it. It is a tool to set the parameters of the 1394 driver. You can set the buffer size (this is NOT the ASIO buffer, but the 1394 buffer) to small, medium or large, and you can set the 1394 speed to either 400 or 200. Try setting these to the most forgiving settings, large buffer and speed 200. Yes, this will have a small effect on the ASIO latency, but it will further stabilize your system. If everything works at these conservative settings, you can gradually sneak back up on them until you find the point where you have consistent performance at the highest speeds your system will allow.