BerylAX or Marble as main router

Technical Support for Routers
1

Now, I have my Marble as main router, meanwhile the BerylAX is a repeater (WDS) to cover part of my house.
Based in hardware specifications (BerylAX has 256 Mb of flash memory), and the problems with AdGuard, should I change modem positions (BerylAX as main router and Marble as repeater?). What's your experience?

Thank you in advance.

2

I'd switch them over, add in the USB port on the Beryl AX and you have network redundancy if required.

3

If you're in struggle with the Marble because of the 128MB of flash, I don't see any reason to not to swap them.

But I don't know if it's necessary because 128MB would not be that insufficient in general.