Hi abigdogdad69, I have a few links here that you can use to troubleshoot this issue.
You can also try this player to watch your TV.
The Slingbox Answers Forum Moderator Team
I had some issues like that -- disable slingstream optimization.
Here are the manual settings I found work 99% of the time at home and away giving me maximum picture quaity (SD set top box) with minimum bandwidth and minimum dropped frames or jumping.
I'm running Windows 7 x64 Professional on a Intel Core i7-720M (1.6GHz TurboBoost to 2.8GHz) 3GB RAM with an nVidia 320M graphics card 1GB video memory and it's smooth as ever.