Troubleshooting Graphical Card laptop windwos

Author: totetmatt

docs/01_User_Manual/01-Troubleshooting.md

@@ -78,3 +78,39 @@ Or add it to your environment variables:
 Add the following JVM parameter in the Gephi configuration file:
 
 ``-J-Dapple.awt.graphics.UseQuartz=true``
+
+## Windows issues
+
+### Gephi not using Graphical Card on Laptop
+
+*The troubleshooting explained is for Intel + Nvidia based laptop, note that the process is still relevant for AMD based laptop, just the tools involved might be different*
+
+If you have a laptop that has a dedicated graphical card (Nvidia), it's very probable that the laptop has also  integrated card (Intel(R) UHD Graphics).
+
+Windows might probably, by default, wont' give Gephi the ability to use the dedicated graphical card, which will result in degraded performance for visualisation.
+
+To check that Gephi has or not get granted to use the correct graphical card :
+
+* Open Gephi
+* On the top bar, go to **Tools -> Options**, a window will open
+* On the tab go to **Visualisation** and then on the tab under **Open GL**
+
+![image](/docs/01_User_Manual/01-Troubleshooting/Graphical_Card_Information.png)
+
+On the right side of the windows, if you see something like `Nvidia Corporation` it means that Gephi is using the dedicated graphical card, all good.
+
+If you see something like  `Intel UHD` it means Gephi is using the integrated graphical card. 
+
+
+To change this and force Windows to let Gephi use the dedicated graphical card :
+
+* Search for **Nvidia Control Panel** on your computer and open it.
+* On left side, select **3D Settings -> Manage 3D settings**
+* Then select the **Program settings** tab
+* Click on **Add** and select **Gephi**
+* Make sure the option **NVIDIA High Performance** is selected
+* Click on **Apply**
+
+![image](/docs/01_User_Manual/01-Troubleshooting/Nvidia_3D_Panel.png)
+
+Then, restart Gephi. It should be now using the dedicated graphical card.