Poor Audio quality in timeline and export

Hi all! So, I'm new to Premiere so forgive me if this is an easy fix, but I've looked around and tried all the potential solutions I could find and nothing seems to be working. 

I'm trying to overlay music I created in Logic over the videos in my project. In the Source window, the music sounds fine, but in the Timeline it is crackly and distorted, almost like it's too hot and distorting digitally. ON TOP OF THAT, when I export, the music is muffled, like it's a low bitrate mp3 with an EQ filter on it (different bad sound from the timeline window)

I'm not sure if these 2 issues are related because they sound different. I could live with the poor quality in the timeline of the end result was correct but obviously it would be better if this wasnt the case across the board. 

I am using a 2017 MacBook Pro running OS 10.13.6. Heres what I've tried so far:

- I have not applied any plugins to the track but I double checked and there are none on either the specific audio track or on the master track. 

- I tried different export media options. Like quicktime with uncompressed audio.

- I tried deleting the entire media cache.

- I tried exporting the original music from Logic at both 44.1k and 48k

- I tried changing the framerate of the Premiere project (not every option, but it was set at 29.95 drop frame, and I tried 29.95 non-drop and 30)

- I tried creating a new project and copying the timeline to that.

None of these things has had any effect, and those were the common solutions I seemed to find on the interne . Any other suggestions?

Thanks!