Firstly a bit of background, used to have an account here a few years back but it was hacked and it looks like too much effort for too little reward to get it back. Looks like a few things have changed, not only around here, but with the wallet itself.

I upgraded my wallet to 0.15.1 but haven't been able to make a transaction since doing so. They get stuck in the memory pool and I need to 'zapwallettxes' to get the coin back. The most recent stuck transaction had a fee of 0.00094394 BTC ($14), is that too low to be mined, or is there something else at play? The txid is '97a69038e7098edac2c3d0ee905ea314c523443b4d834e4fade9cd161ece9055' which isn't even showing up in blockchain.info.

I did notice one bug - the fee calculations look very odd, if I select 'Subtract fee from amount' when sending 0.2 BTC with a 60 minute confirmation time the preview shows 0.05315424 BTC ($798), but only 0.00093806 BTC ($14) if I don't. Not sure if that's expected behaviour, but it certainly feels weird.

Unsure if it would cause an issue, but HD Key Generation is disabled - not sure if this is going to cause a problem or contribute to the high suggested fees I was seeing? I gather this is due to the age of the wallet, any advice on how to upgrade would be fantastic.

Anything else I can do to make a transaction?