Crimson 16.11.4 is the last version, where Freesync and the framiliter are working properly in Company of Heroes 2. In all drivers after that, it always sticks to 144 Hz, even if you chose @60 Hz for example. The framelimiter is not working either. Used the report form months ago - isnt fixed yet.
I also noticed, that Freesync stopped working sometimes in Dishonored 2 after some time, dont know if this is fixed yet. In the last two drivers the displays starts flickering in Panzer Corps, too. My monitor switches between 60 and 144 Hz frequently via Freesync.