I often send small amount of Bitcoin around 100,000 satoshi, is there a way to avoid paying a fee that is a significant proportion of the amount sent?
100,000 satoshis worth 74 cents today which is not a small amount anymore, from my experience i would suggest you to move to another wallet where you don't have to pay for transaction fee which are coinbase or xapo. I have used coinbase and it does pay the tx fee and does not deduce from your balance.