How to send mined coins in less than 74 days…?

I've been mining RVN, and have tried to send 6,000 RVN to a different wallet using Electrum-Ravencoin.

It first needed to 'parse transaction data' – which took 17 hours.

Then it needed to 'sign transaction data' which had at ETA of 74 DAYS.

This was not practical, so I cancelled that and tried to send a smaller amount – 2000 RVN – after reading that as a suggestion elsewhere.

However, that still took 17 hours to parse and then predicted 73 days for signing.

So does transaction size effect the speed, or not? It didn't appear to in this instance. Or do I need to be doing much smaller (100 RVN?) amounts to get usable speeds?