Hi, I just unpacked a brand new Qu5D, and I’m seeing that some faders are slower/laggier than others. I calibrated the faders and it didn’t change anything. The lagginess also isn’t consistent — sometimes the slow guys drag more, and at other times less.
Note that I am NOT talking about the “soft close” effect, that’s fine and I like it. I’m talking about how the faders don’t all reach the destination at the same time.
This is a brand new mixer straight out of shrink wrap.
Video: https://drive.google.com/file/d/1o-3Ecgk-HEWI-s5gSxQjYTAJWdUKU1V3/view?usp=drivesdk
I found the same trouble.
I contacted A&H support and told me tat I require service with my local distributor in Colombia. I sent my Qu to check after 6 months waiting to know how I would proceed.
No a solution to be found, yet! 
Anyone else seen something like this?
Unless I’m misunderstanding your comment, you’re talking about how the relative changes from each individual faders’ point A to point B are starting at the same time but not ending at the same time? Is that not expected behaviour given that all of the faders might be starting & ending in relatively different positions?
In this case the faders are starting and stopping at exactly the same place, but taking a different amount of time. Some are quick, others are more sluggish.