One more update, i tested another redstone contraption which is just 2 levels controlling an iron door and that is fine, so far it's just the sticky pistons. I'm afraid to do more testing since it keeps freezing my game.
One small update, in one of my worlds i was able to break the pistons before it froze again. I was in the middle of setting them back up again and i accidentally let some water in to my redstone wiring and it froze the game
The last thing i tested was my lava draw bridge that also uses sticky pistons and controlled by levers and it also froze the game. So it might be just sticky pistons causing the issue.