I have 2 instances where I mistakenly input my transaction fees in my electrum and it took some time 3 weeks to more than a month to get through. If you do not need the money that much, you can do some small transactions fee but I highly discourage that though because you are imprisoning your coins for weeks and can miss some valuable market trends.
Question here, can you set the fee in Electrum? I am currently using Mycelium and one online wallet. In Mycelium, it has preset fees for low-prio, normal, and high-prio and changes from time to time - you can't set your desired fee. I'm planning to use Electrum if the fees can be set by me, myself.