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[Gear VR] UE 4.12 is the worst build for mobile VR - massive performance issues out of nowhere
I hate to say it, but John Carmack was right when he recommended against using UE4 for Gear VR. While I couldn't have done what I did for my Gear VR app with Unity in the same time frame, I can never ...
Ooh, this gets even better :/ I marked piece of the terrain on which player teleports after spawn as not to be rendered and placed BSP cube under teleport destination. Player spawned, teleported as usual and landed on that BSP cube. Looking down did not drop fps at all. So logically something is wrong with the piece of the terrain, right?
Next thing I did was marking terrain as to be rendered, as by default, but I also left BSP cube in place. It happened that cube was raised above the terrain a bit. So when played got teleported on top of the BSP cube, it ended up being above the terrain. Yet again, looking down did not drop fps !!!! However, as soon as I jumped off the cube and onto the terrain, while looking down, fps dropped.
So if I am standing right on top of the terrain, and looking down - I experience fps drop. If I am standing on something above the terrain (and least half of player's height, but the higher the better) and looking down - there is no performance drop.
Very very odd !!!