Gigabit LC multimode fiber from second building is very slow

There is a blue LC fiber line from a new building office coming into the main building. The fiber is using a transciever to terminate at an HP 2920 switch. The port is configured to auto duplex and speed. The other switch is an unmanaged Netgear switch, the transcievers are differnet.

Pings to the internet from the second office are very slow and internet as a whole is very slow. This is a new line, and I am trying to determine what the problem is. Not sure if a transciever mismatch( different transcievers ) coule be the problem.