If it came from the DJI site, report the executable in question to McAfee, seems like a false positive to me. I run a copy of the free trial on my work PC which has some heavy-duty AV etc on it without any sirens going off...
I run the free trial version on an older Win7 machine, wind the graphics back a bit and it's smooth.
Good for building the hand/eye muscle-memory.
(64bit, 4Gb RAM, GT740 card AMD6100 CPU)