Good day,
google didn't ban me, but is there any comparison of altcoins by average tx confirmation time?

When I try to send some btc from my Xapo wallet, I always get a "You don't have enough funds to send the amount entered.", though there are surely enough funds. I have $43 stuck there, not much, but still a gift for scammers. No reply from support, too. Anyone had the same issue?

Hello,
is there any method how to import multiple(~10000) private keys into Bitcoin Core? Currently, if I do it manually(open console, type "importprivkey <key>") it takes 2 minutes to import, which is totally unacceptable. Or are there any other(non "light") BTC wallet software, which allow to do it? Thanks.

Good day,
I created a large number, aprx. 10000, of BTC addresses with Electrum and received some bitcoins. Now I'm trying to send them to a single address, but Electrum just hangs when syncing to network(and eats 50-100% CPU). Tried to change a server, change protocol(TCP, SSL, HTTP). Fighting with it 3 days already. What would you do in my situation?   I see, there is an option to export private keys. So is it possible to import these keys to some other(non "light") BTC client software? Using Electrum v. 1.9.8