Zip in v3 causes memory error

For large scans, creating a zip can crash the server. Need to investigate max size and whether we can build / transfer the zip in parts

Sep 11 13:15:47 microscope1 kernel: oom-kill:constraint=CONSTRAINT_NONE,nodemask (null),cpuset=/,mems_allowed=0,global_oom,task_memcg=/,task=python,pid=15446,uid=106

Sep 11 13:15:47 microscope1 kernel: Out of memory: Killed process 15446 (python) total-vm:3691292kB, anon-rss:1351908kB, file-rss:13936kB, shmem-rss:0kB, UID:106 pgtables:3364kB oom_score_adj: