I think the most Annoying with UE4 now is the Character BP Capsule Collision, so i made this video to show a simple solution to this, because i didnt see it here in this forums.
When collide with a wall, the character will automaticaly step back a abit to correct the collision. The height and radius of capsule component stay normal by 93 and 42 all the time. If anyone got problem with this, you can post it here so i will show u how to do it(i trust it is for beginner only but i want to help ^^).
And in this video clip, my fps got slowdown, so u can see the collider is not good enough, but in real time, you will feel it much better ^^.