nVidia Ge Force GT 630 - Poor Streaming Quality

Desktop

Pavillion:           500-205t with Win 7

Processor:          4th Generation Intel® Core™ i3-4150 processor dual-core [3.5GHz, 3MB Shared Cache]

Memory:              6GB DDR3-1600 MHz [2 DIMM ]

Power supply:   300W AC power adapter

Issues with two nVidia Ge Force GT 630 graphics cards

First one - poor quality all around - desktop and video extremely blurry

Second one - desktop is  great - but streaming -   colors are hazy and washed out and video not sharp.  Downloaded all drivers & updates.

The nVidia is overriding an onboard Intel HD Graphics card - could this be a hardware issue on my pc that's causing a conflict with the on board video card?

I read that AMD video cards have more controls and are easier to set up.

Would I be better off with the 1GB AMD Radeon R5 235?

Thanks.