Zabbix SNMP OID - Interface Traffic

This is driving me nuts!

I can get OID information and SNMP to work for almost every attribute my devices have -except- the traffic on an interface (i.e. Download/Upload speeds).

I have been using PRTG for network monitoring for a while (https://www.paessler.com/). This tool does a scan on my network using credentials provided and comes back with traffic monitors; no questions asked. I am trying to move to a more cost effective solution; Zabbix. I cannot seem to get traffic readings!

Please help!

https://share.zabbix.com/search?searchword=mikrotik&search_cat=1
From my experience none of them are perfect without some modifications. Just experiment.