Audition skips when I record, waveform lagging behind recording

In that case (as I must admit that I suspected...) give Multitrack recording a try. If you record in Waveform view, your recording initially goes to a temp file, and isn't written to your final file until you save it. The trouble with this is that unless you've changed the default location for where Audition keeps its temp files, it's a shared space in the folder that the OS uses - and that gets priority. Also the OS can resize the space its using, and this alone can cause all sorts of upsets.

Multitrack recording, on the other hand, was a later innovation in which your recording get written directly to its final destination file. So no interruptions from temp file manipulation at all, and it's generally what we recommend unless you've relocated Audition's temp file location to somewhere much safer. Ideally, on another drive in your machine would be a good choice.