V synch and problems with changing views

I  have a GTX 580 using NVIDIA Inspector and  311.06 drivers, WIN 7 Professional, PMDG 737 NGX   that in windowed mode with adaptive V synch at 1/2 and FSX set at 30, or for that matter with Vsynch forced on  whenever I would change views in the 2D cockpit the view seems to flash back and forth between views several times in a split second before settling into  the view I was switching to. Very annoying. Turning off V synch seemed to eliminate it, but leaves the tearing which is also not pleasant.

I notice that many folks never seem to have this issue or bring it up when reviewing threads on V synch, others do.

I was wondering if anyone ever figured out the cause of this and how to resolve it. I do like the smoothness of  adaptive V synch with the 1/ 2 refresh rate, but not the constant flickering with view changing.

Thanks

Greg