Pix4D Fields Stuck at Calibration

Hey guys.
I’ve just started having an issue on Pix4d fields.
Every time I’m processing anything in the ‘high quality’ mode it gets stuck at 27% during the calibration stage and doesn’t go any further until it ultimately fails a few hours later.

I’ve tried this with a few data sets and it does the same thing.
I can get it to work fine when choosing the ‘fast processing’ option but not the high quality option which i would like.

Is this a common issue or would anyone have any recommendations to try fixing?

Thanks