Is it real bandwidth from one interface to other on mikrotik 2011uias-2hnd-in?

Hello guys! I have next config of my mikrotik 2011uias-2hnd-in :
ether1 - master-local (1000Mb\s)
ether2-5 salve-local (1000Mb\s)
ether6-gateway on switch 2 throught this port i have my internet ppoe connection.(100Mb\s)
ether7-master-local (100Mb\s)
ether8-10 salve-local (100Mb\s)


bridget
ether1
ether6

Is it really to set RX speed limit from my ppoe connection ONLY for port ether5? And how can do it, or maybe you offer me more better config?