Hi Terry G; good question!
If you observe your disassembled gun carefully you can see the slight derangements of frame metal due to barrel and slide impacts (with frame) at the (horizontal) barrel flats and the (vertical) slide travel stop face around the recoil spring: using a good HP lube such as Weapon Shield will minimize wear, but some of the derangement is so-called "plastic deformation" (i.e. Brinelling) that only worsens with impact intensity.
Use of +P+ ammo should be accompanied by the installation of (a) heavier recoil spring(s) to absorb as much of the increased energy as possible
before impact (
the big event affecting muzzle flip if you study YouTubes at reduced speed), but heavier recoil springs mean more risk of FTF cycle failure when
weak ammo is used.
Bottom line, if you want to use +P+ ammo without adverse effects, no problem if you also install an appropriately stiffer recoil spring, but don't then expect to run failure-free with cheap "practice ammo" without also changing out your recoil spring for said practice. CZ pistols are, in general, very "forgiving" of pressure and bullet mass (grain) variations but "physics is physics,"* to coin a phrase; no free lunches in terms of impact damage. DPM Systems Technologies provide recoil-reducing stiffer springs if you find yourself out of options (such as the current unavailability of RAMI recoil springs from the factory).
With the possible exception of the new plastic-framed (and external railed) P10C, no CZ will "grenade," even if the cartridge fails.
Here's useful guidance:
https://cajungunworks.com/how-to-select-the-proper-recoil-spring/* Ref. Jeremiah 33.25, also Dr. Jason Lisle's "The Ultimate Proof of Creation"