Holy. Crap.
It worked. Beta 3 finally fixed my upstream issues on my XS. Up until now my XS side by side with my 7 would exceed it in downstream tests but would be 10% of it upstream tests. Now their upstream is equal with the downstream still being much better.
At this point I had almost given up, but I think it's actually fixed.
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I mean, it IS a downgrade, otherwise they wouldn't charge more for the XS. But the upgrades the XS/XSM provide clearly aren't worth it to you. **Secretly envies the cool colors of the phone
** Glad you're happy!