Air carrier Captain reported the aircraft was relatively high on the PAPIs and the flight crew was unable to align with PAPI guidance while attempting to correct despite being on the RNAV approach glide path.

Narrative

When flying into SAV they were advertising the visual approach to Runway 28. I backed it up with the RNAV approach (this is the only one they had available). We were cleared for the approach when we reported the airport in sight. I started the approach by intercepting the final course then followed by the glide path. As we were descending on the glide path I began to notice that we were relatively high on the PAPIs. All four indicators were white while on glide path. I verbally stated that I was correcting to meet the PAPIs. This required a more steep angle than it should have. My Captain Operating Experience candidate was monitoring the vertical speed and air speed; as was I. I had to maintain 1000 fpm to try to meet the PAPIs. We never got on the PAPIs. At no time did the approach go unstable per the stabilized approach criteria. I was planning on a go-around if it did. I did get one sink rate" warning at the beginning of the flare but indicated I was correcting. We landed normally; on proper speed in the touchdown with a normal touchdown rate. I wanted to bring this up because I feel this could result in problems if it were to go down to minimums on an actual instrument approach."