We tried this, it did not work. It always happened around trying to get the 3rd rune. I don't remember after the first spawn of 2 elites that 10-15 seconds later a spawn of 3 elites would come out.

Ran a normal 8man EV run today and everything was normal until ancient pylons. Around completing the 2nd rune when the 2 elite creatures come out, 3 elite creatures would spawn 10 seconds after the set of 2 comes out. We did this on normal on Monday and did not encounter this level of difficulty on normal mode. We zoned out, made sure it was set to normal 8 man, and reset the operation. This did not correct the issue. Anyone else having this issue on 8 man normal Ancient Pylons?