Renaming the input shouldn't do anything on this TV, that applies to other brands from what I can tell. Did you try the different picture modes, specifically "Game" and "PC"?
As for 60fps, nah, I don't think it's related to that because I can watch and play constant silky-smooth 60fps content perfectly fine without issue (though admittedly it's not as "silky" as my Trinitron CRT monitor
You may have been confusing it with what I said about using SVP to interpolate sub-60fps content up to 60fps where I reported weird juddering, but I found out a few months back that it was actually the fault of the PC's crappy Intel 965GMA graphics, not
the TV - setting MPC-HC to use "D3D Fullscreen" fixed the weird judder (it was due to a lack of DirectDraw performance or something - I noticed that it wasn't as bad at 720p compared to 1080p).
The white glow actually could
be a sharpness artifact of sorts - make sure dynamic contrast is off, the sharpness enhancement is off, both noise reduction options are off, and the sharpness is set to -25 like I stated.