Timeline/Sequence Does Not Export. Hangs on encoding pop up.
Hi,
I have a project with multiple sequences.
I have been working with this project since December and have not had this issue before.
Some sequences export just fine, but if they are the longer ones (30 minutes as oppose to 2 minutes) they do not export.
What i mean by that is the following:
The export window opens, as per normal.
I can choose whatever settings I like, as per normal.
I click export.
It then hangs on the encoding progressing bar pop up.

If I place in and out points on the timeline, even if its 10 seconds in duration, the same problem persists.
I have tried copying the sequence clips into a new sequence (i didn't just duplicate the sequence)
This also did not work.
If the entire project wouldn't export, i feel like that would make more sense.
I have tried clearing the media cache, and deleting render files, but still no luck.
Another thing to note, is that the sequences hang when i try to render the timeline, even small amounts of it.
I do not want to reinstall premiere as i DO NOT want to update to 13.1.3. Im currently in the middle of projects and that's just not a great idea.
Further to this, I have tried Queuing to AME but the same issue persists. It hangs during the encoding phase and nothing happens.
PC SPECS:
Processor Intel(R) Core(TM) i7-6900K CPU @ 3.20GHz, 3201 Mhz, 8 Core(s), 16 Logical Processor(s)
NVIDIA Quadro M4000
64 GB RAM
OS Name Microsoft Windows 10 Home
PREM 13.1.2
Thanks in advance for the help.