There is a chance that the Win32 Start menu still exists but is disabled somehow. Server Preview build 10147 has identical explorer.exe but still has a win32 start menu you can get rid of the cortana app and a few more and the performance is way better even with full desktop experience installed. I might switch to server os because win 10 is just ridiculous. But i bet they're gonna f**k up server too in the next months.
Can you or anyone else give us the EXE Files, possibly for both 32 / 64 bit, though I prefer 64 as that's what me and the majority is using, and 64 Works now on all machines.