Hello,

I appear to be having the same issue using a Logitech G502 mouse. As the OP, I have updated drivers and firmware (mouse, GPU, motherboard where applicable). Unfortunately I can't state exactly when I began to experience the issue, but I believe it has been occurring randomly for the last several months.

Most notable issue in game problem is: Using mouse right & left buttons to move, character will randomly stop for no reason ( no terrain obstructions ). Often this results in character taking damage / debuff / KO while trying to avoid attacks.

I'll gladly change to a different optical mouse if there is one known to not have this problem.

Thank you for reading.