I just ordered a rx 580 4gb cuz it was miraculously in stock here in sweden in one store. Now i heard that 4gb vram is not enough for 1080p. I also have a 144hz 1080p freesync screen so i kinda wanted to match the screem with the card. Should i be worried? Take note that it is already too late to change because all the 8gb versions are sold out...again.