Invisible NPCs, PCs, & Mobs

[Soukyuu]

Seems like a connection issue to me, your R numbers are pretty close to 0 (17, 23), mine are usually close to 100.
What kind of internet connection are you using? Do you have any other applications downloading something in background (P2P, download managers?)

From what I read, you don't always have that issue, try finding out what was different at that point of time.

One more thing, my brother was having his character model disappearing on a system that was barely able to run the game at low-ish settings, maybe it's caused by memory issues? Since it's an integrated GPU in OP's case, maybe it's running out of shared RAM?