Suddenly the queues on BF4 european servers became too large

Since last weekend i start to notice that server browser on my client stop showing most of the servers i used to play, usually by 64 players with mostly free 2-10 slots. Still, i can find them on "favorite" page of client BUT they are (still) not just full, but have queues like from 7 to 20+ players long. 
Its not the bug or fake player counts, they really overpopulated.
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Sometimes i see in browser some no-name servers appearing and then suddenly disappearing 

Sooo...what is going with Battlefield 4? Is it BF6 hype which led to crowds to servers or just servers "deficit"?