Roy124 real time control is a new inverter firmware option that means the inverter stores most of its configuration settings (charge rate, start/end charge times, etc) in volatile memory not the flash memory that has limited read/write cycles.
Have a look at the speak to the geek channel and there's a thread 'for those of us thrashing our inverter' on here.
Side effect of the change is that if there is a power cut your inverter reverts to its basic settings and you have to set the schedules up again.
Positive impact is less read/writes to the inverter.
For most people unless you are doing things like balancing multiple inverters (repeatedly starting and stopping charge and discharge to prevent cross charging), this won't be a change you need to make.
I think GivEnergy suggest that one inverter control about every 7 minutes won't cause any inverter issues. So with MyEO I doubt its needed, even if on Agile.
I track my inverter writes with predbat. I am on Cosy at the moment, typically 30-40 writes a day, peak of about 75. I don't plan to use this config option