# Speed difference site2site and vpn

**URL:** <https://forum.gl-inet.com/t/speed-difference-site2site-and-vpn/10807>\
**Category:** Router\
**Created:** [May 16, 2020, 11:56am UTC](https://forum.gl-inet.com/t/speed-difference-site2site-and-vpn/10807 "2020-05-16T11:56:59Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![easydone](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/e/ecd19e/32.png) [@easydone](https://forum.gl-inet.com/u/easydone)\
**Post date:** [May 16, 2020, 11:56am UTC](https://forum.gl-inet.com/t/speed-difference-site2site-and-vpn/10807/1 "2020-05-16T11:56:59Z")

</div>

I have a site2site network which consists of a 1 server and 1 client (both MT300N-v2). The site2site speed is okay being around the max upload speed (20 Mbits).  
When I configure the MT300N’s as wireguard-server and client the speed drops with around 25%.  
See enclosed figure (first test is s2s, 2nd test is wg server client.  
Any ideas why that is?

 ![image](https://forum-static.gl-inet.com/original/2X/8/8df61d781a8e81530e9d1b1245bb57e268179065.jpeg)

---

<div class="post-metadata">

**Author:** ![robotluo](https://forum-assets.gl-inet.com/user_avatar/forum.gl-inet.com/robotluo/32/17434_2.png) [@robotluo](https://forum.gl-inet.com/u/robotluo)\
**Post date:** [May 17, 2020, 1:59am UTC](https://forum.gl-inet.com/t/speed-difference-site2site-and-vpn/10807/2 "2020-05-17T01:59:50Z")

</div>

You need to make sure that your network environment is completely consistent, and this is best done on a LAN.

---

<div class="post-metadata">

**Author:** ![easydone](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/e/ecd19e/32.png) [@easydone](https://forum.gl-inet.com/u/easydone)\
**Post date:** [May 17, 2020, 11:46am UTC](https://forum.gl-inet.com/t/speed-difference-site2site-and-vpn/10807/3 "2020-05-17T11:46:18Z")

</div>

I’ve tested it 10 times in a real life situation (over the same networks) and the client server connection is consistently about 20% slower than the s2s.

---

<div class="post-metadata">

**Author:** ![alzhao](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/a/5f9b8f/32.png) [@alzhao](https://forum.gl-inet.com/u/alzhao)\
**Post date:** [May 18, 2020, 9:36am UTC](https://forum.gl-inet.com/t/speed-difference-site2site-and-vpn/10807/4 "2020-05-18T09:36:56Z")

</div>

This seems an interesting finding.  
I have no idea.

---

<div class="post-metadata">

**Author:** ![bruce](https://forum-assets.gl-inet.com/user_avatar/forum.gl-inet.com/bruce/32/35649_2.png) [@bruce](https://forum.gl-inet.com/u/bruce)\
**Post date:** [October 29, 2025, 4:10am UTC](https://forum.gl-inet.com/t/speed-difference-site2site-and-vpn/10807/5 "2025-10-29T04:10:37Z")

</div>