Trade in the right time and the right size

Since d04 I make forward test with 2 instances of VS_Eurocross on EUR/CHF pair with difference time trading set. It is just another way to optimize my system instead of changing any possible variable. I still try to build a version that can run with several time set at once with difference risk, Money Management and maximum trade. What the lack of Meta Trader platform that we can perform a back test with more then 1 system in single account. So we must combine all system in a single EA to perform such test.
Perhaps by doing this test, it can help us to decide when to put our risk at maximum value, and when we must trade with low risk. Putting risk on the right size is not easy task. Although there are some money management strategy but not every system can match with those formulas.
I post the trades of the trading from last night and seem if trading time 19-05 is worse in this case, it hold trade longer and get less pip.
Open Hour 19
Open Hour 22
On both picture you see also why I am not recomending to run more then 1 expert at a terminal. You can see the spike, once expert can get 2 trades while the other just a single trade. No matter how good your PC and the realibility of your internet connectivity, all expert advisor that run in a terminal, is executed in a single Thread. You can search in google what the term of Thread meaning in programming. But what I know that if an EA is executing its order, then the other's expert on the same terminal must wait to execute their order.