That sounds like some junk TSP cam specs.
I had a car over a decade ago do something similar with all brand new valve train parts. Turned out the cam was too big on lift for the valve spring package. Parts were not bought as a complete setup. Cam from one company, spring package from another.
Looked like your dyno graph, just higher. Also had bad knock retard with low to reasonable ignition advance. Upon disassembly and inspection the interference was enough to cause really bad valve tip wear in no more time than a handful of street miles and then a small number of dyno pulls.