the same here, just enable and the server load is high as hell between 75 and 98%. Thats strange… Since 2.8.4 i had it and theres no reply from the autor :/
Strange, i got the same issue here and found many strange urls that ppl where trying to access, and worse, when i turn on wordtube plugin, my entire server got a 75% of server load in few seconds… why it is happening?