Howdy!
I would recommend to check the following options:
-
While in game press “Esc” → Interface → Mouse.
First try to increase check: Enable Mouse Sensitivity → Increase your Mouse Sensitivity to high. Retest
If the issue gets worse or doesn’t help then uncheck Enable Mouse Sensitivity -
Disable Max Foreground FPS
- Open the System menu
- Click Advanced in the list on the left
- Uncheck the box next to Max Foreground FPS
If you need to still limit your FPS try enable Vertical Sync by pressing “Esc” → System → Graphics.
- Try using the chat command: /script SetCVar(“rawMouseEnable”, 1);
If the issue continues please post up your Dxdiag for us to review. Copy the dxdiag contents into your reply, highlight the text then select the code block icon </>. This action will help us review the information faster.
Thank you!