I want to have two objects (or more) lock together and act as one object. I am making a car-building game where you can build the car with small blocks. Inspired by games like scrap mechanic, besiege, terra tech, and trail makers. You place two 1x1x1 blocks parallel and weld them together and I want it to act like a 2x1x1 block. You usually use fixed joints and it works really well but in my game, I will have a high amount of connected blocks so it is laggy and enough weight will make the joints bend and glitch out even with higher physics updates. so I can make the block connect through code and rotate together and act like 1 solid object? how do the other games achieve the building part with such little lag even with thousands of blocks? I already have the building script done and right now I'm using fixed joints (on every block connected to the parallel block) to hold stuff together until I find a better solution.