Non-Pro asking for networking advice.

Non-IT Pro building a network advice

Hello r/networking! I am currently designing a network for my department at work and could use a little advice/help.

The current network is as follows, a Ubiquiti EdgeRouter-X serves as the primary, and only, router for the network. It provides a route to our Company’s main network infrastructure, and through that the outside world. It connects to that network with one port and our network with the other, additionally it is providing DHCP for the entire network. This connects to an unmanaged switch that then distributes the connection to several other switches.

This network is primarily for internal usage, so connecting to the internet is not a primary use by any means, but needs to be fast when we do need it, as it gets used for live video streaming and uploading.

I would like to get this network to something that is more planned out than just a bunch of random hodgepodge of switches and whatnot that people tacked onto another project at one time or another.

Right now the switches are a mixture of 1G and 100M switches that I would very much like to upgrade as I think they are causing problems with not enough bandwidth at times. We are using several computers with NDI streams in and out, and I think this makes the network unusable for anything else when it is happening.

Any more info please ask, but I’ll try to be as detailed as possible in comments too!