I use both and both were creating issues.
They would pay me sometimes every 2 hours as supposed to, but sometimes every 4 or 6 hours, which would make my 24h payments really low.
For the past 2 days, things have been fine, even though there's an hour or two missing (for example paying every 3rd hour instead of 2).
Never had such issues with any other coin, and it's a mystery that 2 big pools are doing it, which leads me to believe it probably is not pool error.