I'm tryin to use the novatech409b in some of my experiments. I saw previous posts about not being able to use delay in NDSPs and to use time.sleep() instead. But I still seem to have significant issues with precise timing, consistency, and issues in the slack due to using sleep() and wait_until_mu(now_mu). I need optimally less than a ms delay in changing between frequencies but was unsure if the delays I've been seeing, around 8ms, are due to limitations of the hardware or the way in which I'm integrating the NDSP into my code. Have other people used the novatech to a high timing precision? How have you found is the best way to do this?