Hey guys. I own 3 guns but really only carry two so I'm looking for some advice.

This mainly applies to the second gun pictured, my m&p 2.0 9mm w/ inforce apl-c on it. When I carry it it has a tendency to move around a lot. No matter how tight my belt is. What's happening is the clip has some play to it up and down which makes it move back and forth. Being a weighty gun doesn't help. I wear a double thick nylon gun belt with a cobra buckle. That comes loose somewhat but not to the extent that it should make my holster sloppy. What can I buy to put on this holster that would keep it still? I like the ease of removal with the belt clip which is why I use them so that's a must. I've tried snap loops and didn't much care for them. I also carry at a cant. I would like to add the same solution to my tulster holster. That clip is rigid enough but I like keeping my holsters and whatnot consistent. Thanks in advance! My belt is 1.5" if that makes a difference