I don't want to start a fight, and I don't work for Dassault or anyone associated with them, but in the interest of fairness are you absolutely certain there's no possibility that the problem is on your end, with your hardware or network? At least one of those could be caused by a graphics card problem.
And on your problem #3, I had a similar issue. I believe it was also in SW2012, but it could have been SW2013. At Tools > Options > System Options > Display/Selection, "Dynamic highlight from graphics view" would occasionally un-check itself. That has been fixed. I haven't had any trouble with it in quite a while.