As an EU player i notice this in most random BGs that are fully russian (premade i guess).
The enemy players would turn almost at the same time and focus the same target.
Keep in mind this is not multi-boxing, all separate classes and players moving independently just all instantly switching to a new target.
If anyone has seen that super good AI play vs the pro Dota 2 players it looked something like that, inhumanly instantly coordinated.
Literally like they are units in an RTS and someone selected them all and just gave them an attack command on a target.
Frankly i dont see that kind of instant target switching and focus even in pro teams let alone some random BG groups playing at 8 in the morning.
Is there some addon or third party program at play that causes this inhuman coordination?