Greasegizzard, to be perfectly honest I dunno... Maybe that is indeed what it is doing, but the change is like night and day when the temp controlled messages appear. It goes from a rich, flavourful vape for about 4 or 5 seconds at first, then that good vape steadily reduces in time to almost instantly into temp control as the RTA warms up -- seemingly not much at all as far as actual heat goes. Unfortunately I am not experienced enough with TC devices to know any better at this point. I kinda figured a TC vape should start a bit weak and settle into whatever temp it is set, but this mod starts out quite strong -- even in "soft" mode -- then as soon as the temp control message appears it throttles way back to a weak and frankly very poor vape. Then I have to chase it up to 500+ degrees but it still fades away. Plus, if I set it up high like that it scorches if left alone for a few minutes and it cools down some.
Again, these issues might very well all be down to my lack of experience with TC and/or Ti coil building, but the device is indeed choking off the vape when it flashes temp control messages for whatever reason. I find I need to avoid vaping it more than 1 or 2 seconds, all spaced apart by a couple minutes or the temp control kicks in and destroys the vaping. I am very much working on rapidly improving my skills, as well as quickly laying hands on a good temp-control RTA or 5. At this point there could be any number of reasons things are not so great in my TC world.