There are some pretty good shops in Bucharest, Romania if you are interested, a Friend of had problems with his cpu and it would crash, he sent it there and in 5 days max he got it back, he said it worked good now, and didnt complain about anything, but im sure they are not specialised in GPUs.

CPU and GPUs are kind of a different game. I would rather like to have a shop, which has a good reputation on RTX gpu repairs. But thanks :)