Concerning a problem with lags at installations and small loading on system. Puzzled 3 days, has touched all possible variants, thought business in gland. It was necessary to put the one kernels processor and all became clear. Obvious problem SPTD of the driver, including last version 1.59, in work with 4 kernels processors. In my case it is percents Q9450, on a network it is a lot of messages on a similar problem, I look in a profile - at all 4 kernels. The exit one - while to use emulators of CD/DVD which do not use sptd the driver, and it VirtualDrive, UltraISO, with them system works perfectly. I hope to a bug soon fix.