Electrum wallet softwre on big wallets

[bitcoinoplomo]

Lets say that I am using cold storage with Electrum.
So I have 2 machines.
One machine will stay offline all the time and it only create and sign transactions and I will call it the signer.
The other machine is online and will create and broadcast transactions using watch only wallets and I will call it the online machine.

In the online machine I am using electrs to connect to my bitcoin full node!
There is any limitation on the number of addresses I can use on the watch only machine?

Can I use a really big wallet, like having 5000 addresses?

When restoring this really big wallet from the seedkey there will be any problem?

[SomberNight]

The setup you describe is explicitly supported and should work well.

When restoring this really big wallet from the seedkey there will be any problem?

Read up on the gap limit. Just leave the gap limit alone (can only be modified using the console) and you will be fine. Besides that, it should work.

Can I use a really big wallet, like having 5000 addresses?

Electrum (the client) does not scale well for really large wallets. Performance degrades as the wallet becomes larger. Around 10k transactions (in history) or 10k addresses already generated, the GUI will sometimes freeze for several seconds.
If your wallet becomes this large, you should consider creating a new wallet and sending all coins from the old one there.

[bitcoinoplomo]

Thanks!