I also have the exynos.
I would like to mention that many talk about using a good number of Xposed modules as a substitute, but it is very strange that i cannot install more than 5-7 modules (9 if lucky) on my g900h.
Each time i cross that limit, well, my Wifi toggles stop working and turn grey, Wifi access gets blocked, Quick connect also stops working.
I feel very bad as to why only i can't fully exploit a rooted S5. ;(