I know on most of my non-DNA mods the screen literally reads "temperature control" or something like that. or more precisely, it shows the temperature while it's increasing and then swaps the number to "temperature control" when it's there.
frankly, I usually start at about 40w and increase if necessary so as not to 'shock' the coil. the fatter the wire, the slower it warms up and so it needs more oomph to get it started. quite a few mods also have a preheat function to allow for this as well - if yours has got preheat, let it have a second at higher power to get things bumbling along rather than wind the watts full up.
I tend to think of my coil like a light bulb filament..... too much of a surge can cause it to blow - but the principle of TC is the board takes over and limits the wattage anyway.
when I first started TC I was told two basic principles: 1) higher resistance is better - higher resistance is more predictable and, therefore, accurate. 2) give it enough watts to get to your set temperature reasonably quickly, but don't rip the arse out if it.
last thing; for TC you really do need spaced coils.
the TCR figure tells the board what the relationship is between change in resistance and the metal's temperature. BUT if the coils touch, the resistance is effected and so the relationship between resistance and temperature gets skewed - end result is it can't control touching coils anywhere nearly as well as it can control spaced coils.
there's a good thread that explains the key science bits about TC wires in a way that's not too sciency - it might be useful for you
https://www.planetofthevapes.co.uk/...threads/tc-accuracy-and-wire-selection.87131/
Does that help?