Scenario: Playing Secondlife (Full graphics no issues 60fps) and Darksiders (via steam, also running at 60fps but). Darksiders is running full-screen, I alt+tab to check chrome for a recent email, load back into Darksiders and suddenly its got terrible lag, hardly playable. So i save close, and notice SL(Secondlife) is running extremely slow. So i close everything open up, still slow. Attempted fixes: At this point somethings not working, i restarted and still nothing. I took drastic measures at this point. Uninstalled SL, and all of my graphics drivers, restarted, re-installed, and restarted again. Not sure why but still terrible FPS even with only SL loading. So messing around with setting i can get 60+ FPS just fine with all settings at absolute max save one. If i enable shadows of any kind, my FPS goes from 60+ down to hardly 10. Performance levels across the board look fine, nothing spiking, no super high usages. ------------------ CPU TEMPERATURE ------------------ 36c / 96f ------------------ GPU TEMPERATURE ------------------ 52c / 125f ------------------ System Information ------------------ Time of this report: 12/18/2014, 22:32:30 Operating System: Windows 7 Ultimate 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.140706-1506) Language: English (Regional Setting: English) System Manufacturer: MSI System Model: MS-7917 BIOS: BIOS Date: 11/06/14 15:31:33 Ver: V1.8B0 Processor: Intel(R) Core(TM) i7-4790 CPU @ 3.60GHz (8 CPUs), ~3.6GHz Memory: 32768MB RAM Available OS Memory: 32716MB RAM Page File: 5002MB used, 60427MB available Windows Dir: C:\Windows DirectX Version: DirectX 11 User DPI Setting: Using System DPI System DPI Setting: 96 DPI (100 percent) DWM DPI Scaling: Disabled --------------- Display Devices --------------- Card name: NVIDIA GeForce GTX 760 (192-bit) Manufacturer: NVIDIA Chip type: GeForce GTX 760 (192-bit) DAC type: Integrated RAMDAC Device Key: Enum\PCI\VEN_10DE&DEV_118E&SUBSYS_84771043&REV_A1 Display Memory: 4095 MB Dedicated Memory: 3008 MB Shared Memory: 1087 MB Current Mode: 1680 x 1050 (32 bit) (60Hz) Monitor Name: ACER X223W (Analog) Monitor Model: Acer X223W Monitor Id: ACR0050 Native Mode: 1680 x 1050(p) (59.883Hz) Output Type: HDMI Driver Name: nvd3dumx.dll,nvwgf2umx.dll,nvwgf2umx.dll,nvd3dum,nvwgf2um,nvwgf2um Driver File Version: 9.18.0013.4475 (English) Driver Version: 9.18.13.4475 DDI Version: 11 Driver Model: WDDM 1.1 Driver Attributes: Final Retail Driver Date/Size: 11/12/2014 19:20:36, 19966344 bytes TL;DR || Great Rig, No problems with max graphics 60+ FPS before, now 60+ FPS without shadows 10-15FPS with.