^I agree with John that this must be related to both Bluetooth and Wifi on at the same time. I don't have an RJ45-USBC dongle to confirm however Im able to see an increase in how often the shuddering occurs when using a 5GHz band wifi vs a 2.4GHz.
I was suggested to update the BIOS by another thread post and that did improve my performance, now the shuddering only begins after some network usage while before the mouse was not usable even when sitting at the desktop. Reloading the btusb module using modprobe like suggested above also removes the shuddering only to come back after a few moments. Inserting the supplied BT dongle instead of using the internal radios also eliminates the shuddering but then removes one of the highly valuable USB ports and inevitably will have this port fail on my as this dongle catches on everything when I move the notebook in and out of my backpack. True story =( Im experience this on both Ubuntu 16.04 and Kubuntu 18.04 on a XPS 13 9350 with latest BIOS Mouse Im using is the Logitech 2S Anywhere or the 2S Master -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1454450 Title: Bluetooth mouse laggy and erratic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bluez/+bug/1454450/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
