Shorty 1911’s can be finicky. My experience seems to indicate that 100% reliability came with either Commander(4” to 4 1/4” guns,) or full size guns. There are some reliable short guns around, though. It may take a little tuning, or you may have the right ammo already, Ammo, magazine lips, feed ramp, are some of the areas that sometimes need to be looked at. The short 1911’s have a shorter stroke, stiffer springs to make up for a lighter slide, so the return stroke is faster. All those things can make the shorty guns a bit more cranky.
So I've heard. My P12 has been very reliable. But if push comes to shove I have the Smith and Wesson model 19.
The cartridge path has got to be SLICKER-N-SNOT.