After my broker close down after the chf issue
I sign up a new mt5 broker and started optimizing my EA. I was surprise on the speed that it was being optimized.
1. is there different format of history data
2. why is there a difference in speed?
Your old broker was using Depth Of Market, which result in a lot more ticks than a "standard" broker.
Do you have a report from an old backtest ? Check the number of ticks.
I don't have the old copy. When I back test with my new broker, the parameters are not so off from the previous one.
Would more ticks makes the parameter a lot different?
Is the back test using max spread recorded on m1 data?
my new broker 20383135
this is 2x the ticks... what is the effect of this?