Paissa dolls & other furniture disappearing randomly

Time: Jan 3, 2016 @ 11:29pm EST
ISP: Bell Aliant
Type of Internet Connection: Fibre optic
Internet Connection Speed:150/75 mbit
Frequency: All the time
World name: Sargatanas
Character name: Purest Stronkest
Class/Level: Arcanist(28)
NPC name: N/A
Monster name: N/A
Party or solo: Solo, but friend confirmed he saw it too
Race: Lalafell female (he's Au Ra female)
In-game time: 3am ET
Area and coordinates: inside housing
Housing: Goblet, plot 30, ward2
Steps:

I started placing Paissa dolls inside my house, trying to make ordered columns of them.
After about 50 or so, they, and other housing items in the same vicinity, started visually disappearing at random.

I don't have occlusion culling turned on or any of the "handicap for better performance" options apart from low detail on shadows.

Video: https://www.youtube.com/watch?v=eeShY0_QK6Q


-=-=-=-=-=-=- System Information -=-=-=-=-=-=-
Operating System: Windows 7 Ultimate 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_rtm.101119-1850)
Language: Japanese (Regional Setting: Japanese)
System Manufacturer: MSI
System Model: MS-7673
BIOS: BIOS Date: 04/14/11 10:01:35 Ver: 04.06.04
Processor: Intel(R) Core(TM) i5-2500 CPU @ 3.30GHz (4 CPUs), ~3.3GHz
Memory: 16384MB RAM
Available OS Memory: 16356MB RAM
Page File: 4617MB used, 28094MB 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 64bit Unicode
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Display Devices
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Card name: NVIDIA GeForce GTX 970
Manufacturer: NVIDIA
Chip type: GeForce GTX 970
DAC type: Integrated RAMDAC
Device Key: Enum\PCI\VEN_10DE&DEV_13C2&SUBSYS_85081043&REV_A1
Display Memory: 3636 MB
Dedicated Memory: 3906 MB
Shared Memory: 3826 MB
Current Mode: 1920 x 1080 (32 bit) (60Hz)
Monitor Name: Generic PnP Monitor
Monitor Model: DELL S2740L
Monitor Id: DELA08D
Native Mode: 1920 x 1080(p) (60.000Hz)
Output Type: DVI
Driver Name: nvd3dumx.dll,nvwgf2umx.dll,nvwgf2umx.dll,nvd3dum,nvwgf2um,nvwgf2um
Driver File Version: 9.18.0013.4448 (English)
Driver Version: 9.18.13.4448
DDI Version: 11
Driver Model: WDDM 1.1
Driver Attributes: Final Retail

full dxdiag: http://pastebin.com/yz5QFHKU
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