Windows 10 upgrade No driver for Sound Blaster X-Fi (Extreme Fidelity)

I have a Dell XPS 630i from 2008. Originally had Vista that was upgraded to Windows 7. Had some problems with sound but have been able to rollback to previous drivers. The newer drivers did not work. Now with Windows 10 there does not appear to be a driver for the specific card I have. I can install the original driver and it may work for a day then it starts a serious slowdown of the sound or stops all together. Any solutions would be helpful. Thanks.