Is there a way to have a NavMeshAgent ignore inclines?

I have a very small (0.04 units in height) NavMeshAgent in my scene. Its speed is currently set at 0.1 units/second. At that speed, whenever it encounters a slight incline, it usually gets stuck (and when it doesn't, its movement becomes very jerky). To get it to its destination, right now I have to either make the walking surface completely flat or increase the speed (and I want to do neither).

Is there a way to have it walk up the incline like it is just flat ground? or to just have it walk at a static speed maybe?

I think the problem may be caused by its low speed not being able to counteract the force of gravity (which I have set at the default). Ideally I could just scale everything up, but since I'm making the game for VR, I can't. I tried disabling Use Gravity on its Rigidbody while it's on the NavMesh, but then it slips around on the ground.

Is there any way to do this? Do I need to give up on using NavMesh and make up my own navigation system? Thanks in advance for any help anyone can give me!