L2TP / IPSec is slow but has a very high security standard. PPTP is the fastest but outdated security standard. Here is a comparison of encryption protocols and their influence on the Internet speed: In situations when encryption and security do not play an essential role to you, I recommend using less secure encryption protocols to solve the problem of slow VPNs. Some VPN protocols that are considered the most secure can reduce the connection speed by ten times. As a rule, the best (more reliable) encryption means slower speed. There is a direct correlation between the encryption strength and the VPN speed. It allows you to encrypt and decrypt all the data that you send and receive, thereby hiding the transmitted information. Reduce the encryption levelĮncryption is a critical factor for most VPN users.
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I believe that it is better to create a special rule for the antivirus (an exception) that would allow you to bypass the scan.īesides, the built-in Windows firewall can block VPNs on an ongoing basis, so be sure to create a VPN exception for the Windows firewall too. You can get infected with adware or more dangerous things like ransomware. Some people recommend to temporarily disable the antivirus. This can negatively affect the VPN speed since repeated probes slow down the overall performance of the VPN.
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Antivirus software scans data packets and tries to provide you with a secure network connection. Check your antivirus and firewallĪntivirus (with its own firewall) and even the Windows firewall can slow down the VPN too. You can test different VPN servers and check the speed using the above-mentioned Speedtest service. I recommend that you connect to the nearest server.
The data packet must travel a greater distance and, therefore, the speed of the VPN connection may slow down significantly, and ping may reach critical levels. The farther the server is from your current location, the slower the speed will be. The reason for the slow speed may be the wrong choice of server location. To solve the problem of slow VPN speed, you might need to check the servers. Run the speed test with the VPN turned on, then turn it off and rerun the test. You can quickly determine the current download/upload and ping speeds by visiting the Speedtest website. If VPN speed and direct connection speed differ, try the following steps: Disconnect the virtual private network completely and check if speed increases. Troubleshoot connectivity issuesįirst, it is important to find if your VPN is the main reason for the slow Internet speed. Let's go through the above points, one by one.
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