I have been experiencing this now for approx. 6 weeks or so, initially I was on steam however I have moved to standalone yet the problem continues. Interestingly, after a repair (that wont let me download the files because of a lack of disk space) the game starts quickly.
I am on an SSD, have updated all drivers, allowed through DCS through virus and firewall protection...
I have uploaded the log for when the game hangs, and a log for post repair
Cheers
dcs.log
successful dcs.log