You will always have a better pic on the TV if your just using a low end video card!
The better the video card, the better the pic on the PC!
If you have a high end video card and a high end PC monitor the pic should be better on the PC!
Now here are a few things you can do:Try using just one reciever since they are side by side.
At the output have a Y spliter one going to the VA11A the other going to your TV
Use High end cables and Y spliter not dollar store ones!
Other more expensive options:
New LCD monitor and video card