As a newbee to QO 100 I am also looking for a CW solution. In my CW courses I used the Morserino 32 to work with Mumble and Zoom for CW over Internet - the Morserino has a special sine output with a very clean CW signal - maybe this is a solution to feed it to SDR Console without delays. Will give it a try when my components are all together.
vy 73 Thomas DG6UAX