Character/capsule friction when walking by walls is affected by wall height?

I have a regular First Person template character, but when I run along side touching walls, I notice a drastic difference when I touch a 1m high wall and run along side it, and when the wall become 1.5m tall, same copy of the static mesh, the character slows to a crawl, as if a huge amount of friction is now applied… How can I keep a consistent friction with the sides of the capsule?

UPDATE, actually something even stranger seems to be happening, this issue applies like described above, but for copies of the same wall mesh, only certain sides express this problem, when I touch and run along, say the “South” side, the issue doesn’t happen, but on the “North” side it does… is this a physics bug in this version?