the problem with testing out large sums of money is that it lies to you with your drawdown actual numbers. Just as you indicated, you would nearly need to start the account with $5000 just to maintain...that is some serious drawdown my friend.
As to the test only lasting 4 seconds...I can say for sure something is not right if its testing that fast. Are you on MT5 testing every real pip?
I'm not trying to discourage you, I'm just getting you to realize some things now that will save you time in the future when you build EA's. I've built some monsters in history....but when I moved them to MT5 from MT4 and have achieved 100% history (which I still think is wrong), I realized my EA's were not as good as I thought...even though MT4 said the history was 90% efficient. There are several other factors and nuances I have learned on the way, but that advice would be a good start.