Problems with VPN connection on Mikrotik, why does the connection drop?

Question

VPN

All the good time of the day.
In general, I bought myself a Mikrotik map lite router to forward the tunnel to my home router via EoIP.
At home, on the Zyxel router, I raised the VPN server and started connecting to it from mikrotik via PPPtP (the Internet on mikrotik is configured as a switch) and it turns out that mikrotik connects to the vpn server, after which the main Internet connection starts to fall, which causes the vpn- the client after which the Internet connection rises and everything is new!

Answer 1

apparently in the properties of the pptp connection you have a checkmark "add default route"