That is odd. I’m not sure what truly terrible means but you should expect at least 75kbs on your IIci using the original Daynaport firmware I had added. I did notice that something seems to get installed that hampers performance if you do a full install of system software for any Mac (including PowerPC) but you should still get say 50kbs on a IIci in that case. I just do the install for my se/30 of 7.5.3 and that seems to boot up everything I care about anyways. I’m also running OT1.3 but that doesn’t seem to have much of an impact.That's still excellent performance! I'm curious about the code changes, it's a far cry from the truly terrible throughput I'm getting on my Dayna tests; to be fair when both of you tested it you were getting much better results, so maybe I'm using a bad driver or something..
I do pull the Nuvolink driver from the DRVR resource in the system file though before installing Daynaport as the two don’t seem to play nice. (Delete all of the .enet references)