VPN poor performance after MX 15.44 firmware

[Sarpe]

Hi guys and gals ! 

Since I did the upgrade to the latest firmware MX 15.44 three weeks ago, on my customers Meraki’s devices, their download speeds over the VPN clients reduced drastically and is not going over 20MB download even on a 400/400 MB bandwidth .

This is happening on 4 Cisco Meraki’s located on 4 different locations : Z1, Z3, MX64 and MX68

The VPN clients are setup as L2TP/IPSec 

[DarrenOC]

HI @Sarpe , If you can I would roll back to the previous version that you were running.  We've seen some VPN performance issues with this release.

[Sarpe]

Unfortunately, I can't reverse back, it is past over 14 days since the upgrade occurred. I also opened a support ticket with Meraki support and I will post here the resolution, if there is one. 

[AlexP]

FYI, Z1's cannot run firmware never than 14.x, so if you're having a problem on a Z1, it's not related to firmware most likely

[Sarpe]

Yes, I know it doesn't, you're right ... the issues occurred on the MX64 and MX68