As above, 2 diopter cheater lens in the helm PLUS my regular readers.
More light = More better! No such thing as too much light for welding.
Replace the cover plate (lens) on your helm more often--seriously! I have been guilty of using one too long and finally replaced it. My coworkers thought I'd completely lost it when I danced through the brewery wearing my helm and crying "I CAN SEE AGAIN!"
I'm going to change it out again right now.
Get one of these:
https://www.amazon.com/gp/product/B0CNND7LGW/?tag=atomicindus08-20 or similar. You'll be amazed how much cutting out all the light coming from behind the helm helps. It also means you don't need to wear a welder's cap or suffer spatter down the back of the shirt.
You can have mine when you pry it off my cold, dead helm.
I keep my auto lens set to Shade 10 for MIG and 8 for TIG.
BTW: The auto lens of your hood blocks 100% of UV even if not active--as do any good quality sunglasses. It's the visible light that can blind you if your lens is not dark enough. It doesn't hurt like UV burns to the eyes, but we've all been flashed so we know what that's like.