Scenery Popping In

I have just upgraded my system from a Ryzen 5 5600x, RTX 2060 super, 32gb to a Ryzen 9 5900x, RTX 3060ti, but only 16gb and have turned up a lot of graphics settings to Ultra. I fly using a Quest 2 in VR and have noticed a lot of scenery pop in (mainly cliff faces popping and changing whilst I am looking at them)

I am pretty sure this didn’t happen on the older, far less capable system. Could it be a memory thing?

Otherwise I am getting awesome performance, well that was until the headset battery drained faster than my powerpack could charge it and as it was dying, frame rates plunged and I barely got the plane (the new Sting S4) back on the ground before it turned off. But that is another issue.