Hi
I am a network engineer with over 12 years hands on experience working with but not limited to mikrotik in an ISP environment.
I currently consult for multiple wisps across the globe, scaling optimising, HA and integrating mikrotik with other platforms.
What Mikrotik hardware are you using, which ubiquity gear are you using for back hauls and what are you using for shaping/queues?
How many customers and bandwidth at peak? VPLS-MPLS is your best option as it exceeds EoIP architecture
Regards