I have the same problem with my Helix LT, even with Helix Native connecting the guitar in my Focusrite saffire pro 56, I've seen videos where with little gain sounds killer, that is not my case, I have 3 guitars with EMG, Fishman Fluence and Seymour duncan and I can't get a good input gain.
I've been thinking that it could be the fault of the latest updates.