pppoe server

hello, I’m new here, but lately I’ve noticed with v7 firmware from mikrotik ppp clients connected to a mikrotik Mikrotik CCR1036-12G-4S-EM goes very badly that the band more than 360 Mb doesn’t go up and the band is 500 MB guaranteed, I also did the test with an ip directly connected to the network card and it works exactly like the 500 - 600 MB band

it is a problem with the encapsulation part of the mikrotik or more precisely the pppoe-server part

and I had forgotten to put fasttrack connection, otherwise the processor would go crazy