Snapshot is maxing out my memory

The plugin is maxing out my memory and then crashes. Any idea on how we can fix this? Added Snapshot defines and also enabled debug. It timed out and no error logged.

max_execution_time is set to 200 and memory_limit is set to 768M

In cpanel it is showing:

Physical Memory Usage

2 GB / 2 GB (99.96%)

Disk Usage

19.88 GB / 50 GB (39.76%)

I/O Usage

18.34 MB/s / 50 MB/s (36.68%)