I’m into the same thing. My ambient sound is actually a piano performance recorded in Ambisonics. I have been trying with Steam Audio plugin, Google Resonance Audio plugin and Oculus plugin. Steam is static, Oculus sounds cheap. I’ve only had satisfactory results with Resonance Audio. The sound field rotates in real-time, although the L/R positioning is inverted i.e. when you turn to the right of the sound source sound comes mostly from the right ear when of course it should be coming louder from the left ear. I don’t know why this is happening or how to correct this. Moreover, Steam Audio has the best sound occlusion results but unfortunately I can’t make it work together with Resonance Audio as the spatializer. So there I’m also stuck as you are and very interested in some more experienced people giving answers…