BGTL True Heading Approach

I’m trying to fly from BGTL (Thule AFB) which references all approaches in 'T. From the attached screenshots which were taken with the aircraft pointing straight down the runway, I take it that with trying to fly at such a high latitude, there are going to be errors that P3d cannot cope with. For info, the screenshots were taken in the Aerosoft A330 with True selected for the ND. I also tried the PMDG 777 with similar results.

Many thanks for the help.