Player Moves with no input

Hi everyone,

It's pretty much as simple as the title states. Even without pressing any input, the player character will move forward very slowly, nearly imperceptibly, but moves nonetheless. Also, if the player looks around, unless they center the control stick there's a better than average chance that the character will continue to look around, albeit slowly. There's no custom script for movement, just Unity standard FPSInput Controller, Mouselook, and Character Motor. Tried Googling, didn't find anything, and am completely perplexed. Has anyone else experienced this and know a solution? Thanks, and God bless.