Getting some soft feet, Soundcare superspikes could help also. Then granite block underneath the speakers. I’ve been in the same situation like you. Sometimes it’s not the room, but the way amplifier suits the speakers. Or even your brain/eras.
Sometimes taking long break from music listening, could help. Good sleep and so on. I would talk to your local hifi dealer and explain the issue. Alas, it’s so easy.
I have the MA silver 300. Bought them 50 percent cheaper because of the new MA range like 300 7G, otherwise I could never afford them. The amplifier I used before with this speakers were the Marantz PM8006. To be honest even though Marantz is warm sounding, it was too much energy in the upper midrange. Probably the wrong combination with the speakers.
After getting Rotel amplifier then working many, many hours with speaker placement. In the end I’ve solved the issue. By all means it’s not perfect, but it suits me. Recordings like Alice In Chains Unplugged versions is great recoding for speaker placement. The Man Who Soled The World by Nirvana also.