good video.. shame it is recording the monitor mirror left eye.. you wont be able to get better than 480p recording that way.
As you are recording the monitor (left eye) from the display mirror, you could use another method rather than recording display mirror and only 480p. If you are using win 10 you could use the windows game bar recorder!
to activate it
* press Win Key + ALT + R
* if you do this while DCS is running and you have selected it on the monitor then it will record the on monitor footage.
You could also use nvidia shadow play or any other recording software but win 10 game bar recorder does not need any setup and is built into win 10 OS.