Every systems will go through a period of major drawn down, if this drawn down still inline with historical tested behavior, then stick to system rules and those systems will recover in the long run.
One of the major difference I find with CFDs and actual future contract is the spread, usually with an activate contract like oil futures spread are within 1 tick. Depending on the CFD brokerage you use, there can usually be 5 to 10 tick spread.
I guess FX traders who have system that take...
To trade in this volatile condition one also need enough capital to withstand the swing.
When ES has 1 minute bar at 10 point range every other minute, I don't think too many traders can stand this kind of volatility.
One more consideration able tight stop is transaction cost when you got stop out all the time.
I had months that transaction cost alone kill all my profits.
Now a days with overnight trading of all eminis, I think price of future already are stabilize at the beginning minutes.
However with stocks its a completely different story, because some stock open ealier than others, prices will take some time to stablize.