Strange issue after upgrading to a Dell P2715Q: like title says, desktop icons won't stay put after a restart. Unchecked auto arrange and tried other typically recommended fixes but problem persists. Strange part is that when I hook my old LED monitor (an AOC 2436) the icons are where I put them. So all I can figure is it has something to do with the 3840 x 2160 pixel setting on the Dell vs. the 1920x1080 on the AOC, but can't find a setting to correct the problem. Any ideas? I'm on Win10 64 bit.