To start off, I just want to say that the nature that this is a graphical glitch might entail that this is only happening to me. The problem I am having, which I noticed in the Marksman Scenario, is that if you right-click to use your primary scope, then you ctrl+right-click to use the secondary sights, the environment retains the slight blur applied to it when using the primary scope. However, when disengaging looking down sights (LDS), everything goes back to normal. Going from non-LDS to secondary sights doesn't cause the glitch, either. This is really trivial, but it put me off the first time. If it does not happen to anyone else or cannot be reproduced, I wouldn't be too bothered because it is only minor and the blur is minimal. However, I think the game should be as good as it can be, so if this bug can be ironed out, better.