hashcat64 4.2.1 getting killed OOM

Hello!

With the latest version of hashcat, when I try to run a benchmark it runs for a moment then gets killed pretty fast (4-5 sec) while starting the MD5 benchmark.

Earlier versions of hashcat haven't had this issue.

 [ 1606.609541] [17230]     0 17230     5719      545    94208        0             0 bash
 [ 1606.609542] [17602]     0 17602     5717      542    94208        0             0 bash
 [ 1606.609543] [ 8523]     0  8523 24787695  1767959 15208448        0             0 hashcat64.bin
 [ 1606.609543] [ 8776]     0  8776     1128       20    57344        0             0 sh
 [ 1606.609544] [ 8784]     0  8784     1128       24    57344        0             0 sh
 [ 1606.609544] [ 8785]     0  8785    15926     2935   167936        0             0 minerfarm_svc
 [ 1606.609545] [ 8786]     0  8786     1826       18    53248        0             0 fold
 [ 1606.609546] Out of memory: Kill process 8523 (hashcat64.bin) score 876 or sacrifice child
 [ 1606.609591] Killed process 8523 (hashcat64.bin) total-vm:99150780kB, anon-rss:6573256kB, file-rss:474004kB, shmem-rss:24576kB
 [ 1606.683961] oom_reaper: reaped process 8523 (hashcat64.bin), now anon-rss:0kB, file-rss:380kB, shmem-rss:0kB


System:
6x gtx 1070 driver 384.98
8G ram
Intel(R) Core(TM) i3-7350K
(yes it's a mining rig)

It's worked like a *champ* until this release (about a year).
Obviously it wouldn't hurt to throw more ram and a better proc at it, but for now I'm looking for an explaination on what changed in this version; if there's any tuning I can do either with a hashcat config switch; tuning linux itself.

Thanks!