Disappearing NPCs, PCs, & Mobs

[Poggalogg]

I bought the game yesterday, and since then I've come across a big problem with actors not appearing at all. Their dot is on the minimap, and I can hear players run by me, but I cannot see anyone, and I can't click on any NPCs or mobs. This makes leves relatively impossible to finish as the only way to fix this temporarily is to log out and back in.

In some cases, even I disappear! It seems to occur when there are a lot of npcs & mobs nearby. I think it has something to do with the loading of actors on screen at the time.
I've searched for this problem but it doesn't seem like anyone else is complaining about it. Anyone have a clue as to what's happening?

Here we have Carline Canopy, completely empty [Note the minimap dots]


And here's what happens sometimes after I switch gear.


No amount of waiting fixes this, and it doesn't appear to be a connection problem.


My current specs, a la dxdiag:
Operating System: Windows 7 Home Premium 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.110622-1506)
Language: English (Regional Setting: English)
System Manufacturer: Hewlett-Packard
System Model: HP Pavilion dv6 Notebook PC
BIOS: InsydeH2O Version CCB.03.61.09F.21
Processor: AMD A8-3500M APU with Radeon(tm) HD Graphics (4 CPUs), ~1.5GHz
Memory: 6144MB RAM
Available OS Memory: 5610MB RAM
Page File: 3556MB used, 7663MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 11
DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
DxDiag Version: 6.01.7601.17514 32bit Unicode