Why so laggy when using PPTP VPN and how to resolve it?

Hi community ,

I have no idea why it’s so laggy when I’m using PPTP at home.

I need to work at home using PPTP connect to the network of my company.

While I’m operating ERP system or using Xshell SSH connect to ERP server , I’m feeling so laggy and painful .

I’m seeking help here , please give me advice.

Search more about MSS and MTU on Tunnels , i think it’s all about them