The combination of both. If you are able to do it (and if you haven't already do it), try with a controllerThose mountainous planets like Nodacrux, Ontarom or Eletania were imo far bigger issue than Mako's physics.
It's the same problem in BD3... why the hell using (only) analogic sticks for turn, accelerate, brake and aim...!?
That leaves me really perplexed
(Little example, on Noveria, I had to stop for shooting the turrets because if I didn't, there was a great chance that I unfortunately fall in the "void" near the road... the same on Therum but in lava...)
If I remember correctly, in Halo (the first) it was also the same thing...
And sorry in advance for the OT