If you don´t know, how to push your cards to 30mh without claymore, then go fishing or plant some flowers. Sorry thats one of the basics to understand what is happen if i change vram timings, or mem speed or something else.
If say a fisherman or a gardener wanted to set some timings on a RX580 8GB, would he/she have to read through the entire thread on AMD Mem Tweak XL to learn what each parameter does, or is there a way to find timings that would probably work OK for a given card?