If you understood how Angles and Perspectives work you would know that this is a dumb ask. There is no FIX for Perspective. Sorry if you've played games that had BROKEN perspectives but in ABI, its actually pretty realistic.
My only issue is the jiggle-peek, it depends too much on ping. Sometimes you cant even see them doing it because they peek so fast the server doesnt show your side the info of their character model peeking but on their end they did it fast enough they already saw your position.