5.20 not seem to recognize 82540EM Gigabit Ethernet Controll

for some strange reason my old x86 puter i use for router with router software 5.20 is not " allowing " ( for lack of a better word )… internet access speed of more than 10 megabits download speed, do i have something set wrong pls help … and YES i have 100mbp connection

i have a 82540EM Gigabit Ethernet Controller BUT … in interface list for public interface under status tab …it shows / says auto negotiation done … rate = 10mbps and fullduplex no matter what i select on " ethernt tab … is something " selected wrong … or set wrong ???
ScreenHunter_97 Sep. 07 14.31.jpg
ScreenHunter_98 Sep. 07 14.31.jpg

upgrade to 6.4 and, if still not working, send supout to support@mikrotik.com