Is it too bright or is it high resolution?
Yes.
The answer is in the ear of the beholder.
There is a very fine line between high definition and too bright.
You will know it when you cross it. You will find that your listening sessions growing shorter as listening fatigue begins to set in sooner and sooner.
While I do enjoy high definition, I do realize that one can go too far.
I have heard systems that have reached the point of sterile, amusical, and uninvolving.