Wavetracing reverb for music productions

Hi, I try to create reverbs for music productions using the steam audio plugin in UE4.
But I have two problems that maybe you can help me with:

  • The number of audioobjects that I can play at the same time (with wavetracing enabled) are limited to 14 objects. Using more than that results in crackling and clicks. My system performance seems fine, so I guess it has something to do with UE4. Are there any easy to implement performance tweaks for that?
  • Is there a possibility to route multichanel audio (from a DAW) live into different audio objects in UE?
    Here is my progress so far: Best Dolby Atmos Reverb? - YouTube