It’s best to use only one. Sonar Spatial Audio and Dolby Atmos can conflict when they’re both active, causing your audio to sound strange, distorted, or just plain off.
For the cleanest audio and most accurate in-game sound cues, use Sonar Spatial Audio by itself. Disable Dolby Atmos and any other virtual surround or spatial-audio features from Windows or other audio apps to avoid double-processing.
GLHF!