It's just weird to have the speakers disappear, then come back, then go again. It kind of kills the vibe.
This doesn't tell me it isn't the room or speaker placement, honestly. This just tells me the room/speakers are better for some than others.
Try this, if you can. Put the speakers about 3-4' apart and sit close to them. See if that gives you a much more consistent experience. If it does, it's your room.

