Lost Experience on Death

I don't know at exactly which level this starts, but I find it extremely frustrating. I understand from what folks tell me that it used to be worse and that you could actually lose character levels (way to f*ck the player, GGG)? It's still extremely frustrating as is and makes me not want to play. I've got 300+ hours into this game, so I am definitely enjoying it. However, I will say... WTF, mate?

Perhaps lose that chunk of experience and then give a grace period so the next few deaths don't remove experience? Maybe the inverse-- only remove experience if you repeatedly die? I understand the desire to make death meaningful, but when half the time I end up dying because the game thinks I am trying to sprint when I am not--I get stunned and then pummeled. It's bullshit.

I don't know if the grace period is the best solution, but the experience loss means that I am at level 75 and can't seem to go any higher unless I want to turtle the entire time and that just isn't fun. I need to do hard content to get experience, but I can't always get through a map without dying at all.

Quit running content that is too hard for you to run right now.