Essentially, every time I exit my car, sometimes there is lag, to the point of crashing. My suggestion is pretty simple, leave walk mode spawned all the time (as an option), that way, when I get out, there's no lag as the game tries to spawn the walker.
If it was spawned at all time, AI cars would crash into it because it would still have collision, and it would be spawned in the same spot as the map spawn point is so when you exit the car it would teleport you back there... A better idea would be to have the walking mode Jbeam always pre-loaded in cache somehow so it can spawn faster which will make it lag for a shorter time and limit the chance of crashing the game.
What you said is what I meant, you just put it a lot better : ) That's what I had in mind, it's driving me crazy, bc I set up a scene, and all that work for nothing when I want to walk around.