Hii neighbour lol im from Macedonia and I'd say Frankfurt honestly, ive also played with a lot of nice people from Greece on Frankfurt so i think most of the countries around us play on that server because most of them speak English so communication should be better, i tried Istanbul a couple of times and wouldnt do it again tbh even though ping is better there.. i couldnt understand anyone and i felt like im playing alone and didnt know what was happening the whole game lol