Dell engineering is aware that the issue still exists on multiple models, including the XPS 15 9570. Engineering is investigating the width of this issue. I am encouraged by my interactions with them so far.
While Dell engineering has not yet committed to a BIOS update to resolved this issue on the 9570, I do expect that they will commit to that in the future just like they have done on other models.
I will be providing more updates once I know more.
Justin C Dell Technical Support | Project Sputnik
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