Depleting ECR under 50% is mainly to curb the bots, like you don't mind the ECR, the bots care less about it as well with Focus mainly on chests. Unfortunately human players gets affected with these changes to combat the bot.

I have managed to bring my ECR to the 80s and only deplete it to 70s when I do my Focus that way I stay healthy.
I think you should try staying above 50% though.

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