I haven't checked your trackfile, but I suspect you have your radiator flaps fully open (hot starts begin with them in this position), so as you fly your engine quickly cools below minimum operating temperature, gets damaged and seizes. This ties in with you saying the flight was in freezing conditions.
The Anton is extremely difficult to overheat, so suggest you fully close the radiator flaps (detailed in part 7 of Chucks guide here: https://chucksguides.com/aircraft/dcs/fw190-a8/ ).
I only ever open them on hot maps, and then only by one turn of the handle.
Hope this helps and hope you're enjoying the Anton - it's my favourite DCS warbird 🙂
