I have disabled mouse acceleration and set my dpi appropiately yet I still experience some form of acceleration where my mouse will slow down more the slower I move it and speed up the faster I move it towards the edge of the screen.
Any advice would be appreciated thank you.
Disabled it where, and what OS?
Possibly disable smooth camera in Options -> Game if you don't have it disabled already.
I see you already disabled enhanced pointer precision. So if neither is the solution it's probably a G900 thing.
You may actually just want to play with the pointer speed options in your normal mouse settings first. I'm pretty sure these work 'with' all the logitech settings, they aren't disabled by logitech. Sounds like you want to fiddle with pointer speed and Enhance Pointer Precision in the (probably) third tab for mouse in control panel.
