RX 580s Red devil How do I stop getting low ratio and invalid shares

[Melliesart]

my mega hash rate it’s pretty good almost 31.mh so why would I be getting invalid shares &low ratio

[ExcelToMine]

did u bios mode it? this OC is made for bios mode gpu, try to lower then 25 by 25 to get more stable… mem seems to be to high… but the main facter that makes stable is corret, that would be the “V 850”