Adding on to Gam3r01's post:
If your getting FPS deductions, an easy way to fix that is to put the secondary monitor(s) on the IGPU instead of the discrete GPU. That way the IGPU handles all the load of video watching, while the dedicated GPU can focus entirely on gaming and 3d rendering.
The i5 7600 should be enough, as long as the games you play are not CPU intensive.