I’m pretty sure this is just an Ethan character issue, but it did take me some time for me to realize that my flat-cube areas were too tall, which caused the AI character to have these jumping/floating fits. After I made sure the baked Nav Mesh was flat, he would run on the ground just fine as expected. You mentioned some animation issues (like Ethan sliding down the ramp) before, so I’m guessing this is the same?