Periodically get dc (server or it's me?)

Well, i saw many threads about ppl having troubles with log in, server list and yes-yes i know about server issues but still it seems odd for me. So, the thing is if i'm lucky to get in game and start playing for around 40minutes(sometimes maybe less or more, i didnt really measure that) everything suddenly freezes and i get the error *Lost connection to server* and see the fist menu with Start/config/etc....
So actually my concern is = is there something with my internet connection? like i lose connection for 1-2 sec and get dc from game cause it doesnt support (i dont know how it's called)the thing when you have some time to reconnect and just have a huge lag spike instead of full dc? or is it 100% issue of the ff servers and i'm just unlucky to get that error when some ppl stay in game afking~
oh, btw if it helps i play on EU on Shiva server