I've been experiencing this texture issue only when in Cyrodiil and it appears to only be a sky texture bug
It reminds me of The Legend of Zelda Twilight Princess title screen cinematic.
PC - EU - France - AD
Main character: Qojikrin - Khajiit Sorcerer Tank/Stamina DD - since March 25, 2015.
Guildmaster of Oriflamme: Focus on 4 player endgame content.
Member of Brave Cat Trade, Panda Division and Toadhuggers.
It happens to me quite often in Cyrodiil.
Mostly when I am stationary and move camera back & forth to keep it up or make it vanish but keep moving it's just completely gone.
It took several tries just to get a screenshot & that screenshot , I was in middle of trying to get away from an EP zerg lol.