B&W 705 S3 with bad acoustics

We Recently moved into a new home that has terrible room acoustics, 12' ceilings, tile floors, glass window walls.  Open floor plan with no possibility or room treatment. I've never owned B&W speakers curious if they will glare in a very resonate room. Previous tried Kef Rs meta, Dynaudio special 40 and Sonus Faber Sonetto w/ Rel T9x with no luck. Paird with Hegel h390. Auralic streamer.