Was great for two years but has melted down in the choppy trading this year

Great system. Trust the system.

Good strategy, just went through a turbulent market period with it.

This strategy statistically is terrible. They get a couple big lucky wins, but then eventually due to stats and overtrading they lose everything. I don’t know why everyone thinks this trader is amazing. They are not.

Trust the system

When the strategy owner says "It'll test your patience & payoff in the long run", that's accurate. One of my favorite also strategy managers so of course I have the big kahuna. It needs a lot of funds to run, I run another strategy from the same manger in a smaller account that is more small account friendly. Perfect for an account you don't actively watch like a hawk.

I guess you just have to admit that "power of the system". Sometimes the entry and stop loss may let you feel not comfortable or stupid but system eventually prove itself in the long run.

Ensure the account is adequately funded and set up according to the strategy recommendation and leave it to the strategy .. it goes through ups and downs, but persistence pays off.