Extra devices listed on your device manager might also be the issue.This is also reported to be a bug with the game. A controller connected to the computer for playing the game might also be the culprit of the issue.It seems like a technical bug where the mapping is not done correctly and there is a conflict. There is a bug between Dark Souls 3 and Human Interface Devices on your computer.Also, the drivers should be updated to the latest build as game developers always optimize the game according to the latest version. The drivers installed on your computer are either not working properly or are corrupt.