Crash or Not Responding When Put or Change An Aircraft to MQ-9 on The Map

[WSXMAX]

I edited the map for about an hour and didn't save. When I put an MQ-9 on it, the game crushed or Not Responding. The CPU usage image as below. Seems an endless loop. This problem can be repeated.

 

[WSXMAX]

Log's here.

dcs.log