Maybe you misunderstand my ramblings.
I'd first suspect something to do with the extractor and/or its tension. Maybe involving a barrel fit/spec issue, too. (Presuming a stock recoil spring and the use of good quality magazines, of course.)
The shooter component (fatigue, frustration affecting grip stability, etc) can only be eliminated by you.
The use of bargain ammo is just something that may sometimes contribute to an existing gun and/or shooter issue, making it a bit more complex to diagnose.
I have no concern over the ammo someone else uses in their privately owned handguns. I neither shill nor recommend specific ammo. (Sure, I have an interest in the ammo used in an agency-owned weapon that I'm responsible to help support & maintain, and as an armorer I'd like to know what's being used if someone brings me a gun for diagnosis & correction of a reported "problem", but that's a different subject.)
Luck to you.
Retired LE - firearms instructor & armorer