FWIW, I was primarily gaming with emulators, which may lean on the CPU more heavily than native android games.
On my N10, someone made a mod to make the resolution 1024x800, which helped some games. Maybe something similar could be done with the N5. On most emulators, anything beyond 480 is unnecessary anyway.
Sent from my Nexus 5 using xda app-developers app
Unlike the CPU, with which we can achieve a stable OC, it seems the GPU is often less stable and less beneficial... On my N4, I used franko kernel, and he refused to do a GPU OC. I seem to recall a concern from franko that it would mess with stability, but I could be remembering incorrectly; maybe he just wasn't interested in the GPU. I tried an alternate kernel that had a higher GPU max frequency, and to be honest I didn't really notice a difference. Underclocking the GPU was evident, though, which is why I thought a GPU OC would help speed things up. Maybe there's a bottleneck somewhere else after 450mhz?