I've equiped Sander with a Red Pitaya to take back to California; it contains a working biquad filter bank running at 16 bits and 125MHz, using Direct Form 1 with the Scattered Look-Ahead technique. I'll continue to tease performance out of the other implementations, specifically DF2T and BQF for higher bit counts, and I'll provide firmware updates when possible. Hopefully the current version will at least allow you to get some latency baselines. The board runs Pynq so installing the newer versions should be a breeze.

The Red Pitaya is set to use a single channel, and you can program via Pynq how many filters in series you would like to put in the signal path, up to 6. Each one can be programmed independently, so in this way you can run an arbitrary filter designed with SOS stages. Do keep in mind the current limitation of 16 bits, however. Also, I didn't include a gain stage so this is probably an obvious addition to the next version.

I've set up a Github organization with all of my work on this thus far. It's set to private so if anyone wants to take a look please comment your emails in the comments. Chris told me there was a Gitlab instance so maybe I can migrate this there eventually.