Not sure if you'll really find such a specific answer about this here. Might help to be more specific, though.
Were the controllers wired?
Were you using the DS4 natively or a tool?
Blinking red is a sign there is latency over 10ms; it's in the Settings for DS4Windows. It's happened to me before and I'm right in front of my PC using one wirelessly.
In short, I think it was probably just the latency if you were using DS4Windows. No idea what else it would be.
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about 5 DS4 controllers started acting pretty weird today when i had a lan party in my home.
we played games like speed runners just fine on my laptop ( windows 8.1 ) but then this comes.
all controllers started blinking there own color + red color ( if one was green then it blinks red and green, same if its was blue )
when we switched to the extra few moments and the same thing happened. my laptop was pretty cold and all of them were bluetooth connected which was weird. since there is 0 interference and it only happened like few hours since we started playing.
the controllers are still fully working despite the annoying blinks. and no lag.
any ideas?
looked it up a bit and it seems like heat issues, but the 5th one was unused and everything else was pretty cold thx to the AC in the room
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