I am busy building a solution ala. wallet that uses NBitcoin based on the Programming the Blockchain with C#.

One of the issues that I am running into is that the calls to do a balance check via QBitNinja and/or sending a payment will end up timing out after a while, after I have done a few checks. I ended up having to throttle my balance and send logic.

Is this an issue with TestNet or just in general a blockchain issue - or maybe a framework issue?

I am thinking of swopping out NBitcoin with BlockCypher to compare.....