given the link quality observations in #11 and the behavior in #12, it's pretty clear that the problem is with the radio power management.
since it isn't improved at all via any of the PM settings, that suggests it's simply broken rather than overly-aggressive. for reference, the head for the last good version of the driver is 6A56582B1FEECB841E329C4 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1795116 Title: large performance regression (~20-40%) in wifi with 4.15.0-33 and later To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1795116/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs