Well there are certain guns that don't do JHPs well, and it really isn't restricted to junk guns either. Browning Hi-Power is a good example of this. It is one of the finest guns ever made, but it just does not feed JHPs well. It has more to do with the angle of the feed ramp than anything, in my experience. The 1911 is another platform that doesn't always feed JHPs that well.
I'm not familiar with the PT111, but I know it is a relatively popular gun. I think it's due to the cost mainly, but it seems to make a lot of PT111 owners happy. I would suggest looking for ammunition like the Critical Duty or Critical Defense that have more narrow tips than some other offerings like HST or Gold Dot. Hornady makes the XTP bullet which is used in their Hornady Custom ammunition and their newer American Gunner product, both of which are more narrow at the point. Try that and see if it helps.