Recording and buffering

I'd appreciate any and all help in troubleshooting this issue that has been taking me days trying to fix. Basically, when I start recording, the playhead keeps stopping and going and recording choppingly. It is almost like it is being buffered, but that doesn't quiet make sense. I have the same problem with Adobe Audition. I did not have any issues until after I downloaded the 25th versions. Strangely, I have another computer on which I am running these same application versions and no problem there. Please help!