Missing textures saves the lock by 30 fps?

All good time of day, tell me here in Assassin Creed Syndicate when riding a horse texture did not draw, put the lock on 30 phps, So it began to draw, CPU I have A8-5600K, and GP GT 1030 with acceleration, the question is, what is such a shit with textures because of the CPU? , and in other games this did not watch, in the same gatka fifth there is no such and in the Mafia 3.
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