@drack
I also had problems for a long time until I tried this and all is working fine now.
Simshaker problem fixes.
Install XFiGoPro]SBXG_PCDRV_L11_1_03_0001 (this is my USB soundcard) in troubleshoot compatibility
Install SimShaker Sound Module Setup v 2.26 in troubleshoot compatibility
Install SimShaker for Aviators Beta Installer v2.2.7 in troubleshoot compatibility
Test configuration
Hope this can help you?