They did great with chain. No slipping or anything. We did have a little side wear on the drivetrain due to misaligned sprockets/chain. We have been through 10 competitions with these sprockets and they are still working.
I do not have an exact weight, but I think they weighed half as much as the steel sprockets!
You do not need any fancy programing to make a sprocket work.
Just a simple program, CNC mill, mill bit, and a drill bit!