DISCLAIMER: You will need to use a third party application to make registry tweaks to your system and you will need to change several advanced hardware settings in your control panel to get full effect from this guide. If you aren't comfortable with any of this, stop reading now!



WARNING: Fully applying the changes in this guide will require the system to reboot and will most likely also cause the system to momentarily disconnect from the internet until you have completed all the steps. Please make sure you aren't in the middle of a map when trying this.



Path of Exile's frequent issues with desync are only partly derived from the game itself - a large chunk of the problem stems from the default settings used in Windows that control the behavior of the system's Network adapter. The operating system is built with the assumption that most users will not be doing a large amount of gaming, and hence the settings are not configured well for the fast-paced data streams that online games use.



You will need one third-party application to make some of the changes, called TCP Optimizer, available from SpeedGuide.net (When you launch TCPOptimizer, make sure you RIGHT-CLICK on it and select "Run as Administrator" or else THE CHANGES WILL NOT BE APPLIED SUCCESSFULLY!



In the TCPOptimizer window, you will need to configure the settings under the first two tabs as shown in the picture below, with important parts circled in red. If you know your internet connection's speed in megabits, please also feel free to indicate it with the slider at the top of the first tab. If you don't know, leave it alone. For the PPPoE checkbox, you will want to check PPPoE if your internet connection uses DSL (runs through the phone lines), or leave it unchecked if your internet connection uses cable. Do not change the MTU box unless you know what your internet connection's MTU is. If you don't, it's best to leave it alone. All other circled settings should match exactly what is shown in the picture.



Once you are finished configuring TCPOptimizer as shown, click Apply changes. If it informs you that the current user account does not have the permissions required to change all the settings, please re-read the second paragraph. Select 'Ok' to the dialog box that appears. The program will inform you that a reboot is required to apply the changes - select restart later.



Next, you will want to open your Control Panel (usually accessible directly from the Start Menu). You will need Control Panel to be in the Advanced view to find the Device Manager quickly.



Under the 'Network adapters' category, you should see one or more adapters listed. If there are more than one, you are looking for the one you use with your internet connection. Any adapter showing "1394" in its name can be ignored. Double click on the adapter you believe to be the correct one. If unsure, please post a screenshot of your Device manager window in this thread and I or someone else should be able to tell you which one you use.



In the Properties window for the network adapter, change to the Advanced tab. If there is no advanced tab, your networking drivers are out of date, and are probably contributing to your desync problems. Contact your system manufacturer or consult your documentation for more information on how to update your drivers. You should see a page similar to what is shown in the picture below. The rule you will be following when configuring these settings is fairly straightforward. Select each item in the property list in sequence. If the only configurable setting is a drop-down box, check the list of options for "Disabled". If "Disabled" is an option, select it, and continue to the next setting. If "Disabled" is not an option for the setting, ignore it, and continue to the next setting. When you reach the end of the Property list, you are finished. Click Ok to apply the changes. This will cause your system to reconnect to your network - this is normal. Now, reboot your system, and you are finished.



Click for full-size image

You will need to use a third party application to make registry tweaks to your system and you will need to change several advanced hardware settings in your control panel to get full effect from this guide.Fully applying the changes in this guide will require the system to reboot and will most likely also cause the system to momentarily disconnect from the internet until you have completed all the steps. Please make sure you aren't in the middle of a map when trying this.Path of Exile's frequent issues with desync are only partly derived from the game itself - a large chunk of the problem stems from the default settings used in Windows that control the behavior of the system's Network adapter. The operating system is built with the assumption that most users will not be doing a large amount of gaming, and hence the settings are not configured well for the fast-paced data streams that online games use.You will need one third-party application to make some of the changes, called TCP Optimizer, available from SpeedGuide.net ( click here for their downloads page).In the TCPOptimizer window, you will need to configure the settings under the first two tabs as shown in the picture below, with important parts circled in red. If you know your internet connection's speed in megabits, please also feel free to indicate it with the slider at the top of the first tab. If you don't know, leave it alone. For the PPPoE checkbox, you will want to check PPPoE if your internet connection uses DSL (runs through the phone lines), or leave it unchecked if your internet connection uses cable.. If you don't, it's best to leave it alone. All other circled settings should match exactly what is shown in the picture.Once you are finished configuring TCPOptimizer as shown, click Apply changes. If it informs you that the current user account does not have the permissions required to change all the settings, please re-read the second paragraph. Select 'Ok' to the dialog box that appears. The program will inform you that a reboot is required to apply the changes - select restart later.Next, you will want to open your Control Panel (usually accessible directly from the Start Menu). You will need Control Panel to be in the Advanced view to find the Device Manager quickly.Under the 'Network adapters' category, you should see one or more adapters listed. If there are more than one, you are looking for the one you use with your internet connection. Any adapter showing "1394" in its name can be ignored. Double click on the adapter you believe to be the correct one. If unsure, please post a screenshot of your Device manager window in this thread and I or someone else should be able to tell you which one you use.In the Properties window for the network adapter, change to the Advanced tab. If there is no advanced tab, your networking drivers are out of date, and are probably contributing to your desync problems. Contact your system manufacturer or consult your documentation for more information on how to update your drivers. You should see a page similar to what is shown in the picture below. The rule you will be following when configuring these settings is fairly straightforward. Select each item in the property list in sequence. If the only configurable setting is a drop-down box, check the list of options for "Disabled". If "Disabled" is an option, select it, and continue to the next setting. If "Disabled" is not an option for the setting, ignore it, and continue to the next setting. When you reach the end of the Property list, you are finished. Click Ok to apply the changes.. Now, reboot your system, and you are finished. Last bumped on Nov 13, 2017, 6:11:55 AM