Everything works fine after reinstallation of Windows OS and TestComplete 9.31 on physical machines. According to 'Super PI Ver1.1e (calculation of pi up to 33.55 million digits)' benchmark there is almost no difference in performance of described machines.
Currently the issue exists on another virtual machine with Windows Server 2008 R2 Standard. I installed on it a trial version of TestComplete (ver. 10.0.531.7). The result is very simillar and scripts execute 7 times slower than on physical machines. I have copied whole project directory to this virtual machine from physical machine.
