I hate to see a question set here for 2 days with no relies..... but I have not had and will not have the time to check this out in detail for several more days.
Switching to a new sample in CSC should not keep any sort of echo. I'm thinking the....
Hello,
hello, hello,
hello ......kind of echo A delay however..... that is latency. That goes back to the sound card, the drivers and the settings for latency and buffers. And CSC is after all a midi based synth and subject to latency with less than optimal sound card and drivers.
I don't recall your exact sound card since it's not in your signature....