Game was obviously made with controllers in mind first because left click interacts as if you were pressing a controller button as in it interacts based on proximity rather than where you are clicking. This has to be the most annoying thing I have ever experienced in a video game. You are standing near a portal but you are clicking on something away from the portal without the portal highlighted but the game uses proximity to determine what you are clicking on and poof you portal. None of the combination of interact options makes it to where you can look by hovering without risking interacting with something when the game flickers your hover highlight.
Missing something?