Because of the way this EA works, limiting EP to say 20% would result in a stepping down ladder of losses. I use tick data testing as a benchmark and set the lots accordingly in order to limit or prevent losses. In the case above, the GBP/USD had 11 consecutive sessions of nothing but gains. This was the first time that had happened in a decade, therefore, my 2 year period of backtesting was not as foolproof as it should have been.
To answer your question, no I don't use any EP: The EA is free to trade, BUT, I will cut my losses (as I manually did with my loss above) if sentiment and consensus dictates that a reversal or retracement is unlikely AND if swap rate goes against me. In other words, If EURCHF is stuck with buy positions, I may let it ride for as long as I can providing other EAs in the same account are still chuging along making profits.
Although this graph shows a significant loss, it will seem irrelevant in the long term, as you may see by going to my personal accounts under 'gerald325i'.
One thing that I would like anyone to know is that I offer no guarantees, and that the risk of losing everyting is always a possibility. As I will tell anyone who wants to invest in Forex: treat it as casino money. If anyone is looking for 100% safety, their mattress might be better. Anyone offering guarantees is simply lying.
I hope I have explained it well.
Gerald