Slow VPN Connection

[Masa3]

Hello Team

I have an issue with internet speed when using the company's VPN connection. The internet speed drops drastically and I have to reload several times to get to any website/service. I have the feeling that the issue is similar to the one posted on this thread: https://forum.vodafone.de/t5/St%C3%B6rungsmeldungen-Internet-TV/Slow-VPN/td-p/2142086 as our IT department told me that everything looks fine on their end. I don't have any issue with the company VPN when tethering over my phone. Could anyone here help me with that? 

Thanks in advance. 

[reneromann]

Ask your companies IT if they can provide you with an IPv6 compatible VPN endpoint.

The other solution would be lowering the MTU to anything below 1428 Bytes...