The main changes in the panel.cfg was so they use the gauges from the P3Dv2 777-200ER_GE, which are different from those for FSX (I posted an image showing the difference a while ago). I am not getting any shimmering/unreadability in the VC of the -300_PW/300ER_GE/F at all. If I was, there is no way I would not have shared what I did. ;)

Besides all that, this "solution" is done more for those, like myself, who already own the Expansion Models for FSX. For those with the 777 for P3Dv2 only, you might be better off waiting for Captain Sim to release the Expansion Models for P3Dv2. :-/