Well yes Hyundai seemed to struggle most in "longer", "mid-speed" corners and as you say and there are few of those here.

That said it's shakedown where they remember every corner after 2-3 passes, in rally when there is many more unpredictable changes in corner and the car needs to react it might be more difficult (ref. C3).

Another point is that I think the SD is faster than most rally stages and Tanak (like Rovanpera and Breen) are best on "fast" rallies/stages.

As a final thought with regards to championship his only (very small) hope is to push. He won't close up by ending 3-4th, so question is if he goes crazy push level. (Historically he seems to be unmotivated if he only should "finish", like in Monza last year).

So I hesitate to read too much into it.