I have a Razer DeathAdder which has been working great until I upgraded to 17.10. Now the mouse moves incredibly slowly. As in, to get from the left side of my 4k monitor to the right side, I'd have to scroll my mouse across the mouse pad maybe 30 times?

Everything was fine in previous releases, so something changed with 17.10. I tried going into the mouse properties in settings but changing the mouse speed there has absolutely zero effect.

Right now, I have a script that I run to modify the transform matrix, but I have to run it every time I turn my screen on, I guess because my mouse is plugged into the hub on the back of my monitor? It's also silly that it won't save my settings across reboots, etc.

Here are my current settings. What should I play with to change the mouse speed, and how do I get the settings to be permanent? Unfortunately, other DeathAdder mice are supported by openrazer/polychromatic, but apparently not my "black edition" that I specifically purchased because it doesn't have LEDs all over the place.

```
$ xinput --list-props 12
Device 'Razer Razer DeathAdder':
Device Enabled (153):   1
Coordinate Transformation Matrix (155): 1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
libinput Accel Speed (386): -0.413043
libinput Accel Speed Default (387): 0.000000
libinput Accel Profiles Available (388):    1, 1
libinput Accel Profile Enabled (389):   1, 0
libinput Accel Profile Enabled Default (390):   1, 0
libinput Natural Scrolling Enabled (287):   0
libinput Natural Scrolling Enabled Default (288):   0
libinput Send Events Modes Available (272): 1, 0
libinput Send Events Mode Enabled (273):    0, 0
libinput Send Events Mode Enabled Default (274):    0, 0
libinput Left Handed Enabled (391): 0
libinput Left Handed Enabled Default (392): 0
libinput Scroll Methods Available (393):    0, 0, 1
libinput Scroll Method Enabled (394):   0, 0, 0
libinput Scroll Method Enabled Default (395):   0, 0, 0
libinput Button Scrolling Button (396): 2
libinput Button Scrolling Button Default (397): 2
libinput Middle Emulation Enabled (398):    0
libinput Middle Emulation Enabled Default (399):    0
Device Node (275):  "/dev/input/event2"
Device Product ID (276):    5426, 41
libinput Drag Lock Buttons (289):   <no items>
libinput Horizontal Scroll Enabled (290):   1

```