I recently installed Windows 7 x64 Professional and full package of software when I noticed that system became unresponsive.
After debugging a while I noticed the disk read/write speed was dropped 90% to 25MB/s Seq Read (according to CrystalDiskMark3). Before installing the software I tested the new Kingston SV200S3128G 128.0GB SSD disk to have in the same PC and OS 210MB/s Read speed so from HW point of view there was nothing wrong. Then I traced my steps back to test the speed after removing some of the software. Just to make sure I re-installed the OS and the suspicious software.
According to my test the reason was installing Microsoft Visual C++ 2008 x86 Redistributable. To remind you this is a 64-bit machine and 64-bit W7. But the x86 version of this redistributable is required by CamStudio software which I like to use and so far I have not found it to survive with any x64 redistributable versions.
I did make the disk speed test with Microsoft Visual C++ 2010 x64 Redistributable and all was again good at 210MB/s.
So I'm looking for any help or clues to solving why Microsoft Visual C++ 2008 x86 Redistributable would be making the machine slow.
Topic updated acc. to recent test results. Having only VC++ 2008 x86 installed the disk speed was still up at normal level. Testing continues.