Enable Multicast Internally

I have a small network consists of a Windows 7 Pro machine as a Acronis Snap Deploy Host and I connect up to 4 laptops to deploy images to. Recently speed went from 90mb on 4 machines to 11mb when imaging. I am not using any other swithches. Just an RB2011.
Acronis is telling me I need to enable Multicast on the network. Where can I find this setting.

If all of the devices are in the same IP range, then the Mikrotik has nothing to do with the multicast. To these hosts, the Mikrotik is acting as a simple switch / bridge, both of which forward all multicast traffic w/o any configurations.

If the devices are in two different IP networks (i.e. forwarding their traffic via the Mikrotik as a router) then you need to enable Multicast forwarding.
Make sure the package for multicast is installed and enabled. (It’s available on the website in the “all packages” download for your version of ROS)
Go into routing > pim and add your LAN-side interfaces as PIM interfaces (no need to enable IGMP proxy for PIM interfaces)
Set the RP to be one of your Mikrotik’s IP addresses (any address on the 'tik will do.)

That should do it.
Here’s the documentation:
https://wiki.mikrotik.com/wiki/Manual:Routing/Multicast

So since all devices are on the same subnet 10.0.1.0/24 then I’m fine. Mikrotik doesn’t block Multicast internally.
Tried different routers, switches, host computer.
Nothing I do gets this back to 90mb when deploying multiple devices.
Argh!

Thanks for your response.

Anything change on the server? Maybe a failed drive or RAID rebuild is slowing down read speeds?

so after more support from Acronis - we determined that the Windows 10 Anniversary yupdate which we just deployed on 1 machine and created new master image - did not use a network driver in the Snap Deploy Server library. So, I had to create a WinPE image for the machine to use. I am not back to 90mb. But running at 70mb.