WPF Application slowing down on i5 Processor machine
One of the developed application in WPF is running very slow on i5 process Laptop.
UI contains multiple user controls (200+) in nested Items control. Same application is running with good performance in one of the Desktop machine.

**Below is the detailed configuration of Laptop where its very slow (50 sec to render the UI) :**

Operating System: Windows XP Professional (5.1, Build 2600) Service Pack 3 (2600.xpsp_sp3_gdr.101209-1647)
System Manufacturer: LENOVO
       System Model: 2537W2K
               BIOS: Ver 1.00PARTTBLx
          Processor: Intel(R) Core(TM) i5 CPU       M 520  @ 2.40GHz (4 CPUs)
             Memory: 3060MB RAM
          Page File: 784MB used, 5172MB available
        Windows Dir: C:\WINDOWS
    DirectX Version: DirectX 9.0c (4.09.0000.0904)
DX Setup Parameters: Not found
     DxDiag Version: 5.03.2600.5512 32bit Unicode


**Display**


Card name: NVIDIA NVS 3100M
     Manufacturer: NVIDIA
        Chip type: NVS 3100M
         DAC type: Integrated RAMDAC
       Device Key: Enum\PCI\VEN_10DE&DEV_0A6C&SUBSYS_214217AA&REV_A2
   Display Memory: 256.0 MB
     Current Mode: 1680 x 1050 (32 bit) (60Hz)
          Monitor: ThinkPad Display 1440x900
  Monitor Max Res: 1440,900

----------------------------------------------------------------------------------------------------------------------------------------

**Below is the detailed configuration of Desktop where its fast (6 sec to render the same UI) :**

Operating System: Windows XP Professional (5.1, Build 2600) Service Pack 3 (2600.xpsp_sp3_gdr.101209-1647)
System Manufacturer: Dell Inc.
       System Model: OptiPlex 755                 
               BIOS: Phoenix ROM BIOS PLUS Version 1.10 A04
          Processor: Intel(R) Core(TM)2 Duo CPU     E6550  @ 2.33GHz (2 CPUs)
             Memory: 2004MB RAM
          Page File: 1544MB used, 2353MB available
        Windows Dir: C:\WINDOWS
    DirectX Version: DirectX 9.0c (4.09.0000.0904)
DX Setup Parameters: Not found
     DxDiag Version: 5.03.2600.5512 32bit Unicode

**Display Card**

Card name: Intel(R) Q35 Express Chipset Family
     Manufacturer: Intel Corporation
        Chip type: Intel(R) GMA 3100
         DAC type: Internal
       Device Key: Enum\PCI\VEN_8086&DEV_29B2&SUBSYS_02111028&REV_02
   Display Memory: 384.0 MB
     Current Mode: 1280 x 960 (32 bit) (60Hz)
          Monitor: Plug and Play Monitor
  Monitor Max Res: 1600,1200
      Driver Name: igxprd32.dll
   Driver Version: 6.14.0010.4837 (English)


**Please help me to understand the  cause to slow down the rendering.**

WPF Application slowing down on i5 Processor machine
===

One of the developed application in WPF is running very slow on i5 process Laptop.
UI contains multiple user controls (200+) in nested Items control. Same application is running with good performance in one of the Desktop machine.

**Below is the detailed configuration of Laptop where its very slow (50 sec to render the UI) :**

Operating System: Windows XP Professional (5.1, Build 2600) Service Pack 3 (2600.xpsp_sp3_gdr.101209-1647)
System Manufacturer: LENOVO
       System Model: 2537W2K
               BIOS: Ver 1.00PARTTBLx
          Processor: Intel(R) Core(TM) i5 CPU       M 520  @ 2.40GHz (4 CPUs)
             Memory: 3060MB RAM
          Page File: 784MB used, 5172MB available
        Windows Dir: C:\WINDOWS
    DirectX Version: DirectX 9.0c (4.09.0000.0904)
DX Setup Parameters: Not found
     DxDiag Version: 5.03.2600.5512 32bit Unicode


**Display**


Card name: NVIDIA NVS 3100M
     Manufacturer: NVIDIA
        Chip type: NVS 3100M
         DAC type: Integrated RAMDAC
       Device Key: Enum\PCI\VEN_10DE&DEV_0A6C&SUBSYS_214217AA&REV_A2
   Display Memory: 256.0 MB
     Current Mode: 1680 x 1050 (32 bit) (60Hz)
          Monitor: ThinkPad Display 1440x900
  Monitor Max Res: 1440,900

----------------------------------------------------------------------------------------------------------------------------------------

**Below is the detailed configuration of Desktop where its fast (6 sec to render the same UI) :**

Operating System: Windows XP Professional (5.1, Build 2600) Service Pack 3 (2600.xpsp_sp3_gdr.101209-1647)
System Manufacturer: Dell Inc.
       System Model: OptiPlex 755                 
               BIOS: Phoenix ROM BIOS PLUS Version 1.10 A04
          Processor: Intel(R) Core(TM)2 Duo CPU     E6550  @ 2.33GHz (2 CPUs)
             Memory: 2004MB RAM
          Page File: 1544MB used, 2353MB available
        Windows Dir: C:\WINDOWS
    DirectX Version: DirectX 9.0c (4.09.0000.0904)
DX Setup Parameters: Not found
     DxDiag Version: 5.03.2600.5512 32bit Unicode

**Display Card**

Card name: Intel(R) Q35 Express Chipset Family
     Manufacturer: Intel Corporation
        Chip type: Intel(R) GMA 3100
         DAC type: Internal
       Device Key: Enum\PCI\VEN_8086&DEV_29B2&SUBSYS_02111028&REV_02
   Display Memory: 384.0 MB
     Current Mode: 1280 x 960 (32 bit) (60Hz)
          Monitor: Plug and Play Monitor
  Monitor Max Res: 1600,1200
      Driver Name: igxprd32.dll
   Driver Version: 6.14.0010.4837 (English)


**Please help me to understand the  cause to slow down the rendering.**
