I have found that to speed things up, getting the correct angle after making the bend helps. Some receptacles have the terminal recessed a bit making getting a #12 under the screw a bugger sometimes.
The standard is to have a 3/4 turn wrap, but if I end up with only a full 1/2 and it's tight, so be it.
Some receptacles are so cheap that they break if you over tighten the screw the least bit and will work loose if you don't get them tight enough.
If I have a bunch to do I will put pigtails on all the new receptacles ahead of time and do it on a nice work space for mass production. This drastically cuts the R/R time because all that's needed is the ceremonial twisting of wire nuts for the connection. One caveat, make sure the boxes will accommodate the extra connections. Some won't and you are stuck with terminating while you are on the floor or bent over.
For doing amount of swaps you are, it's too bad we can't trust WAGO type connectors just yet. Pigtailing the new receptacles and using WAGO's to hook them up would be super fast, plus the WAGO's don't take up as much space.