I don't know the actual events that transpired in Tesla's existence (nobody does). However, this movie painted him in an unfavorable light which I did not appreciate given my admiration gained through untold amounts of personal research prior to viewing. Watch PBS Master of Lightning or the autobiography of Nikola Tesla or any of the other things about the man.
I'm glad to see a modern movie about him but this was poorly executed, IMO.
Frankly, the movie made me a bit angry.