TCP goodput is inversely proportional to latency and packet loss, which is why internet speed tests usually select servers as close to you as possible. TCP (transmission control protocol) carries the bulk of the world’s internet traffic. Similar techniques are also applied by other VPN protocols. To resolve this, we have re-engineered OpenVPN so that sessions can be evenly distributed to all running OpenVPN processes, eliminating the possibility of a single thread becoming overloaded. Otherwise, a single CPU thread could become overloaded. However, this alone is not enough to fully address the problem unless the load is properly distributed between the multiple processes. ProtonVPN solves this problem by using multiple OpenVPN processes per server to fully take advantage of multi-core processors. This means the CPU power of a single core on the server processor becomes the limiting factor for speeds. Server CPU speed is often a limiting factor because many popular VPN protocols (including OpenVPN) do not use multithreading. Below, we look at how VPN Accelerator can unlock even higher VPN speeds by overcoming other limiting factors. However, capacity is just one element of VPN speed, and it is often not the limiting factor for VPN performance. For comparison, SwissIX, the largest internet exchange point in Switzerland, has a daily average network capacity of 80 Gbps. ProtonVPN’s capacity across our networks, which we are constantly expanding, currently exceeds 1 terabit per second (1,000 Gbps) and is one of the largest VPN networks in existence. VPN Accelerator is unique to ProtonVPN and comprises a set of unique technologies developed internally by our research team to better leverage our large network capacity. VPN Accelerator is enabled by default, works on all ProtonVPN apps, improves performance for all VPN protocols, and is available for all users. Thanks to this new technology, you can always enjoy the best possible VPN speeds when using our service.
VPN Accelerator improves VPN connection stability and can increase our VPN speeds by over 400% in certain situations. As a company created by scientists who met at CERN, we have a strong culture of research and development, and we have recently leveraged this to significantly increase VPN speeds with a new feature called VPN Accelerator. ProtonVPN has a long history of developing new solutions to complex and difficult problems, including ways to defeat attempts to block VPNs and advertisers tracking users across the internet.