Well, at least my Bradleys were very, very slow in using their TOWs in vanilla. I spotted a stationary T-54 and halted my pair of Bradleys who immediately engaged with AP rounds at about 600-800 meters range. I waited and waited for that TOW to come, had to pop smoke after about 30 seconds since I feared the tank would shoot back (which it finally swivelled its turret to do. Good timing by me). Not until the smoke dissolved one of the Bradleys finally let off a TOW, just before my emergency-disembarked infantry got their Javelin gunner ready.
How is it with the Humvees, by the way? Are those under the same limitations as the APCs? Just asking since I did, after failing mission 3 in Marines, using my TOW-equipped Humvees very aggressively, both racing through housed areas and down into defilades, distracting tanks with Mk 19s and .50 HMGs, and then speeding up with 'Fast' orders to get into LOS with the TOWs, shoot them to pieces, and immediately reversing down into the defilade again to reload.