Lunati Hydraulic FT Cam users..........

Hyd vs solid.
Read about the power fall off in the upper rpm with the hyd.
It’s a real thing.

I’ve experienced it too many times to count.

Solid Vs. Hydraulic Lifters - Mopar Muscle Magazine
Nice read. I think I shift about 4800 now with the small cam (no tach). Will probably shift about 5500-5600 rpms with the next cam, but the engine will decide.