Hello,
I just checked yesterday the same example and i note also double latency. Please find picture attached. Latency is measured with Spectral Lab.
For 256 samples, i get a 11.814 ms latency, that is twice it should. 1/48000*256. The example is not modified, just a bypass @ 48000 KHz.
I am working with blocks because working sample by sample couldn't get a high performance working with FIR filters. But i do not understand why this double latency. Too much.
I work with Ezkit lite. with no processing.