Gravity suddenly started working very slowly

My scene has a few rigidbody objects that can be moved around using the dragerigidbody script.

Everything had been working fine. I would drag them, I could fling them, then they'd fall back to the ground realistically.

but for some reason, after about an hour (and numerous test later) they stopped doing that, and instead drop reaaaly slowly and do not fling at all.

I didn't change gravity, i didn't change the time scale. (Those are both on their default settings) I had been working on something else completely unrelated to these objects and gravity and the like.

I was testing again after making a new scene and having the character move to the new scene. The terrain had been massivly oversized, so I scaled it down. (This was in a different scene and it didn't change anything on my other scene/terrain)

But now the gravity is wonky. I thought perhaps making that new scene did it? I deleted the terrain, no change... I deleted the new scene... no change. I deleted pretty much everything I had changed since I last remember the physics working... and nothing!

Adding a new object (basic cube) and adding rigid body to it just to see if that would still work. but that falls slowly too.

I'm not sure what happened, or how to fix it :(
On a side note, my character is also moving much faster and turning much faster than before. Its very annoying.

I'd appreciate any advice.