Render a single clip

How can I render a single clip. When I try to render the work area it just plays the timeline instead of rendering. I have checked the keyboard shortcuts but it does not change anything. I need to render clips linked to After Effects that have the Warp Stabilizer on them because they don't play in real time even with CUDA. They play at about 10 fps and when the playline gets to the next clip that is native it still plays at the choppy rate until I stop and then re-start playback. Ideas?