GW2 is extremely CPU heavy, so you want to get the best CPU you can, as you said especially taking into consideration single core performance. GPU is of less concern so you should be fine with what you have I think. I run it on Ryzen 5 1600, and RX580 8GB. It runs alright, but you can really hear it. Biggest effect to me were CPU and SSD upgrades

I always try to think what would be appropriate for my female brawler thief (dd), Specter set is more… shadowy thingy

How about lore friendly human female meta?

I honestly feel like quitting the game.

I’ve played gw2 since it released, and there’s very little that excites me about the game anymore. Feels like a constant grind for gear if you don’t have legendary equipment (I don’t) and if there is something I hate, it’s gear grind. I finished the story, said my goodbyes to Aurene, and I guess I’m ready to never log in again.