I have 2x MSI Rx 570 Gaming 4G that I can't modify BIOS unless I use pixelclock patcher which causes my miner to crash.

I have 4 other RX 580 cards that I modified their BIOS (using ATIflash) WITHOUT using pixelclock patcher and it works fine. Any ideas why this RX 570 card absolutely requires the patch? Is there any way around it?

Thanks for any help.