Invasions are dead in Dark Souls 3. Don't try it if you're not prepared to die more than 70% of your invasions / are not really familiar with it. My experience when invading was enemy chugging estus all the time, endless phantom summoning and repetative invasion of the same person / gank squad. Low level invasions were okay-ish (minus the estus drinking), however there are only a few spots which are fun for invading, one of them being the Aldrich Faithful invasion area.
I'm really kinda fine with invading phantom parties, but people chugging estus is really killing it for me. I wish FROM at least allowed the invasion of the same number of dark spirits as there are phantoms in the game.