using wings and elytra (both active) brings the player in a odd position, they are flying backwards with high speed. if you went in the right positon using controlls. you will fly up very fast. I know it's odd to use this together. I am testing a few things and thought I should report this

I like that the speed increases if you use both. only the position id odd, maybe you can patch it if an active elytra gets detected.
the mod looks great so far, thx for your hard work.
Edit: I only use my crystalwings texturepack for the elytra. the only other modification I am using is optifine.