After upgrading to 6.26 I notice very slow PPTP from Windows clients.
Max MTU 1460
Max MRU1460
MRRU 1614
Use Encryption Required
And in Windows VPN is set with “Negotiate multilink”.
It worked fine several years till the last upgrade to 6.26
After that it is almost impossible to connect to remote desktop behind VPN, and cannot transfer files etc
If in Windows PPP settings we disable multilink, then it works fine again.