Not sure what was wrong but am sure the CPU was Not utilized at all so why did this happen ?!?...
My PC is pretty much highest end, with 5820k 6 Core 12 Threads, and 3x GTX 970's on SLI !!...
i was monitoring the program and it was reporting 0 hash/sec so it wasn't working either, is this because am having nvidia cards and why is this terrible slowness happening and can we avoid it and be able to mine properly with 3x GTX 970s ?
Help appreciated...
Thats nothing unusual , when GPU is 100% in use, it causes little sluggish response from computer( its actually display only, computer is fine). What I suggest is try with with SLI turned OFF from NVIDIA control panel and then try again.
Also, keep eye on the temperature / stats of the cards just in case.