Thanks for your answer, this fixed the problem of samples dropping at the wavegen output. I am wondering, however, if there are any other configurations to choose from? By selecting configuration 3, it seems like patterns cannot use a custom waveform, but for my application I was hoping to have a small pattern (1 channel, ~100 samples) output concurrently with the 8k samples. I tried using "Play" and it works for some time, but occasionally samples will drop using this option.
Best,
Isaac