There’s been issues with the WAD process using up memory until the unit goes into conserve mode since I was on 6.0.6. I started running a script to restart the process twice daily and have never had a problem since. I just upgraded from 6.4.13 to 7.0.12 a few weeks ago and I’ve left the script to run on every upgrade since 6.0.6. I’ve never disabled it to see if I don’t need it any longer, maybe I should.

config system auto-script
    edit "restart_wad"
        set interval 43200
        set repeat 360
        set start auto
        set script "diag test app wad 99"
    next
end