Importing obj file into dimension - stopping at 50%

Hello, I'm very new to this so please stick with me.
I just downloaded Dimension yesterday onto my Asus ProArt Studio book. When trying to import an obj file (details below) the program takes 20min to get to 50% and then stops.
It is a massive file, but all other problems on here that are similar are for files far larger.
I've restarted the computer and reinstalled the app twice and it is still happening.


This is all for work, I urgently need some help sorting this.
Thankyou
