No I never did as its Hynix memory. Its the main card in my multipurpose rig rather than a dedicated mining machine. I try to get less power draw on good hash speed rather than red line it. If im lucky I may get another when they go on the sales but since the profits are now negative its on the long finger wish list.
Hynix memory is so sensitive to memory OC. Anyway, If you can get some reference edition Vega 56 for a really good price then get one.
The reference cards were usually shipped with Samsung memory and they OC really well with better ASIC quality.
Sapphire or MSI will be a good choice.