Hello,
From what I understood, Fasttrack is a way to bypass a ton of rules/steps to do in L3 processing, in order to get a higher throughput when connections are already established/related. I tried to enable Fasttrack by adding the firewall rules but the IP → Settings fasttrack counter never increases. Is fasttrack incompatible with L3 HW Offloading (I suppose, since the packets that are offloaded never reach the CPU but I figured better ask than guess 
)
Thank you!