1. Not mainstream. 2. Different set of bugs/issues to deal with compared to x64. 3. Too much work to maintain multiple releases. 4. Less memory available in virtual space for multi gb VRAM cards. 5. I don't use it to test it to a standard that I would be satisfied with. However, I have done some limited testing with XP 32-bit drivers recently, I just don't have the time at the moment to do anything for x86 or x64 of any flavour. (moving home) What I can tell you is that skyrim (TESV) crashes badly with the last 13.1 XP 32-bit drivers, but there is a solution for the UltraHD 4K video crash. Won't have time to work on anything to do with drivers till moving home is completed.