Thanks for the info!

Can you share a picture of the room correction results for the L/R? Also can you share what your room dimensions are, which wall you're facing, and your distance from the mains?

I think you're on the right track so far with changing where Audyssey is applied. I was using battle scenes in Braveheart to test. There are some very bright sounds with all of the metal, and things can sound artificial very easy in there.

What I ended up doing was turning off Audyssey, turning off any dialogue enhancement, and also any sort of audio processing.

Then put on the song Turn Down For What, and played with the subwoofer levels until it sounded balanced.

Your PSA monitors have quite a high bottom end, and may be better with the crossover a little higher. I've seen different advice all over, but "double the low response" has been quite common.

Putting them at 100-110, and allowing them to have more room to focus on the rest of the band can clean them up.

The last thing I did was build to mid bass modules and only allow my mains to run 150 on up.

I know some of these suggestions sound like they wouldn't impact the brightness. But my system sounded much better TO ME when I played around with its balance, and stopped focusing on correcting just the high end. Bringing the bass up can trick your ear into it sounding less piercing.

My LAST resort was contacting Danny at GR Research. He offers a service where you send in your speaker and he measures it to identify if the crossover is out of balance or deficient anywhere. He has some videos for some speakers that he's tuned with a custom crossover. After doing my "free" tweaks I decided not to go through with the tuning from Danny.