Non-Uniform Refinement terminated abnormally on V4.4.1

I am trying to run a Non-Uniform refinement Job on cryosparc 4.4.1. The Job ran fine in previous versions. I have a box size of 324. I also tried to run it on low-memory mode but still gives same error:

There seems to be very little RAM available. Please can you check:

  1. the job log (under Metadata|Log) for additional error information
  2. whether the system log indicates process termination due to insufficient RAM
    sudo dmesg | grep -i oom
  3. How much RAM does the CryoSPARC worker computer have
    free -g?
  4. Where other memory-demanding processes running simultaneously to the non-uniform refinement job?