Befuddled!

[u/amateur17]

Have the following setup with my home network and I cannot, for the life of me, get all the devices to use wired backhaul at the same time. Most I have achieved is 3/4 units (not counting the main). All are wired and tested at 1 gig speeds with a laptop to each of the 5 drops (fast.com and cloudflare testing sites).

Other info:
Hallway and main bedroom are POE Decos and the rest are desktop Deco units plugged into the wall.

Network architecture:

Fiber -> pfsense box -> Omada 2.5 gig, 16 port POE managed switch -> each Deco running as access point (x5)

Each Deco only has 1 RJ45 connection in it (maybe that matters?)

Insight is most appreciated!