How to get Fractal Relics fast?
Stick with your level of fractals. It won’t do you any good to move up since you’ll only get the rewards for your personal level (including the amount of relics). It didn’t take me too long to get the back piece. All I did was do each level at a time and work my way up. The relics come fast enough and I got lot of rares along the way to add to my pile of ectos I needed to upgrade the back piece. Plus, you’ll learn the fights much better and probably be able to do well at higher levels. I think overall it was maybe 2 weeks before I had enough for the back piece but that was with only doing 1-2 levels per night. I did it very casually so I’m sure it can be done much quicker.