What would you use? Poly

I’m in the process of conforming a One and a half hour film from 24frames to a NTSC and PAL version and the result is not the best. You can hear artifacts in the score when using the the time stretch Solo musical I’m now thinking I should of used the Poly Complex? So what process do you guys use.

Here’s mine

NTSC Version
Time stretch 99% Solo Musical
Pal Version
Time stretch 96% Solo Musical

FYI all sorted now - Sounding great