I'll add my own experience to this thread. I have probably almost 1200rds thru mine now. It runs great with cheap Remington Golden Bullets. Just a few feed issues with them. Only ammo issues ive had were with CCI Copper 22s, only ran about 50 but a lot kept stove piping for some reason then after half the mag was gone it ran fine. Today I ran some 250 rds of Aguila Super Extra thru it. Had quite a few feed issues were the rounds nose dived and jammed on the feed ramp. Ive ran Aguila Colibri thru it as well but had to hand rack each load but no issues as long as I was quick with it.
After the first range session i found the accuracy went away, when I got home I found the rear sight came loose. Tighten it up and adjusted the sights in, I get pretty decent groups now for someone with shaky hands.
I love how it feels in my hand, the 16 round magazines and that the magazines were $20 each. The trigger is awesome, as a new gun owner it makes me understand what a good trigger should be. The reset is very audible and you can feel a positive reset. I bought it locally new for $260, cheapest new gun I've bought this year, I love it enough that I want a 2nd one in FDE, so im keeping an eye out.
I have an M&P .22 Compact and a Beretta Neos as well, the TX22 is my preferred range gun. Haven't shot a Glock 44 yet, been tempted to rent one just to try.