Unfortunately it’s very hard to determine what could be causing this as this is a particularly mysterious problem which we’re still in the process of learning about. In most cases it’s a result of mismatched RAM speeds which I appreciate isn’t the case for you. The solutions we’ve listed here are based on other players experiences.
I’ve recently spoken to a player who learnt their issue was a result of an unstable RAM overclock, so that’s something worth considering, and another player with MSI Afterburner had to re-scan their overclocks.
I appreciate this isn’t a particularly helpful response but this is something we’re continuing to look in to. This error is driving me up the wall and I’m equally desperate to uncover a one-shot panacea, but unfortunately our recommendations at this time are limited.