Phoenix miner crashes my rig to offline

Whenever i seem to set phoenixminer connected to ethermine, my whole rig goes offline whilst the rig in person is still running but not mining. I get errors such as phoenixminer reboot. I have been using ethminer for now but that gives me low hashrate on etherminer

These are gpus that are overclocked

For Beta3 (5/6/0-200909-beta-hiveos) you’ll need at least 6Gb of RAM or use TeamRedMiner.
As alternative solution (without adding more RAM) you can reimage to Beta2 via hive-replace tool for example

if you are using phoenix 5.1c, switch to 5.1b it is better.