does VAFC affect motor stability?

when using a VTEC AFC controller, i've read that if you set the VTEC crossover point too low, that the car won't run good. if true, why? isn't the VTEC lobe just a higher cam profile, right? how does activating VTEC early affect engine performance?

activating at too low of an rpm can reduce low end responsiveness due to the high lobe profiles of the VTEC lobe. like a high lift cam in a V8, sometimes too much flow is not good, especially at low rpm.

also, VTEC operates on oil pressure. all Hondas generate more than enough pressure for proper VTEC activation, but at low rpm, oil pressure is obviously lower as the pump is crank driven. in rare cases, VTEC may fail to activate due to low oil pressure.

the bottom line is low rpm response... setting the crossover too low will cause the car to perform poorly at low rpm after VTEC crossover

that makes sense. i tried to relate to it like that, but my imagination couldn't see it...now i can, THX.