Red Pitaya has the same problem almost every other board like it has: it is completely impossible for it to transport the full firehose of data to and from the computer. Since you absolutely must decimate the data to and from the ADCs and DACs, you will have to become an expert in doing DSP on FPGA, wrestling a huge state machine that implements some semblance of Ethernet, etc. You spend literally all of your effort to transform and transport the data before the software that you want to process it can even touch it. It's an absolutely stupid waste of time and effort.