Latency and Crashing issues *SOLVED*

Thought I would share my experience on this one.  I have a TASCAM US-1800 USB Audio I/O device and up to tonight haven't has any issues.  I brought up a sample CW project (Jodi Good - Where Did We Go Wrong). When I started playback, everything was fine and then all of a sudden, the tus1800u.sys file would start to disintegrate causing static, crackling, and eventually crash SONARPDR.exe. I disabled everything I could think of. Sometimes it would play one time through and then the second time would crash.  Also the tus1800u.sys file caused a BSOD.  The last thing I thought it would be was my disk defragmenting program  (diskeeper by Condusiv Technologies). I stopped the service and set it to manual.  No more issues!