It's not uncommon having timing issues under Windows systems because most ms-dos games tended to program PIT (Programmable Interrupt Timer) directly. If you are using VDMSound you could try tinkering with timing options (under advanced) like capping DOS frequency or trying to reduce CPU usage. Sometimes, it helps. You could also try some slowdown utility.

Is there a way to turn off XPs Soundblaster emulation and use a real soundblaster 16?? or would there still be timing issues?

I think it's newer Operating Systems that are making timing issues to occur. MS-DOS was a mono-tasking os that had all level of privileges when running. Modern multi-tasking OSes are far different.

timing issues are unrelated to the used soundcard.
it's just windows multitasking idea that messes up the internal timers

Is there any way of fixing this timing problem in windows?

remove windows 😉