The Taurus revolvers I have owned....I have had to "adjust" myself, but after working-out the kinks....they were very good shooters and as smooth as any Smith I own. I gave up on sending one back home, as long as the problem did not seem catastrophic. Most every one I have owned has been very roughly machined in the area of the recoil shield. Burrs, nicks and just plain out-of square. I have usually cured round-dragging problems by re-working the recoil shield. Sometimes a fine file and some "hand-machining" are in order to remove tool-marks, or burrs which cause the rounds to drag and basically lock-up the gun as it became hotter through firing. On the 94's....a spring change is definitely in order and the trigger can be tamed. Some issues with the 22's are centered around BTCG (barrel-to-cylinder-gap). I find the gaps to be very tight and the cylinder will tend to lock-up once the forcing-cone area becomes fouled.
Who knows in your case, maybe there is an internal issue that needs attention. I have usually been lucky enough to tweak mine and make them work.