At COLD start-up, RPM's jump to 2,200

At COLD start-up, RPM's jump to 2,200. There's engine clacking noise due to lack of lubrication to top end. Is this normal? Oil pressure needle immediately moves to "normal." Clacking noise abates as RPM's decrease as oil makes its way to top end.

At WARM start-up, RPM's appear normal, about 1000 without the clacking noise. Then slows to about 750.

I'm concerned about excess wear and high RPM's @ cold start (and foot NOT on gas pedal).
Is there a way to manually adjust RPM's LOWER at cold start? Is something else happening?
Your thoughts? Thanks!