if i enabled IoT network would it effect the download/upload speed.

If i change the deco units to AP mode do i lose the 100 devise capacity per unit. i have Spectrum modem which handles 5 device only.

I have 1 Gigabit download and 40 MB upload service with spectrum and have 2 deco XE75 units connected via Ethernet backhaul. I was able to get 940 MB download and 40MB download when connect to 2nd dec