I'm having this problem too! I purchased a new PC over a year ago, so I don't think it's that, I ordered a new pedal, that made no difference and I've updated ES to the latest version and it's still doing it.
It starts off fine but after about 20 minutes of typing that's when the lag starts and the more I try and type, the worse it gets :-(
Just wondering if anyone eventually got a fix for this problem? It's very frustrating when you're used to being able to transcribe quite freely without any problem.
