Mwirigi - to process Mbps/Gbps payload data as fast as you're telling us you want, you may need a cluster or some other parallel distributed processing system which i don't think you have at the moment coz your question wouldn't appear on the list.. (and it's thus clear you can't be working with NSIS so it may take you time to get this going..) note also that unless your kernel is intentionally broken in special ways to bias fairness, your process would be quickly terminated as a memory/processor hog. 

So take my suggestion, first dump to file then process later.