Thanks, I’ll take a few tips from his suggestion on the settings in OC/s in HiveOS, a few things I’ve learnt there.
Also, concenring the PolarisBiosEditor, I’ve been using this and got really good results. I’ve not set anything manually, you can get good results just from using the automatic option there. In HiveOS you can Download a copy of the card BIOS, save that on your PC, then upload that into PolarisBiosEditor, click on “One Click Timing Patch” and press Yes to the various options, and then SAVE a copy of the new BIOS… (save as a different names, like “new” as the prefix), so you have your original at hand as well if you need it. Then in HIVEOS you can flash the new BIOS back to the card. This has helped all my cards. DO AT YOUR OWN RISK… but it has helped me. As I say that’s as far as I have taken it so far, still loads to learn.