Hi Paul, Mmm that's strange. What NVidia driver version are you running ? And any chance they got updated (or other part of the OS) between the last time it worked and now ? I'm not sure what timeout you're talking about, but in any case, the batch size (CL job) in gr-fosphor is constant, there is just more of them sent one after the other for high sample rates.
Cheers, Sylvain
