The problem with flashing textures. (World of Tanks)

Hello! The game has a problem with blinking textures with the graphics settings turned to full (see video link). It has been noticed that this lag disappears if the shadow and lighting settings are reduced to medium. The client of the game is fresh standard without mods. Who had similar lags, please unsubscribe.
Spoiler
PS I'm not fond of tanks, I just went into the game to test the hardware.
Added. I put the drivers out of the box with the video card, the problem disappeared, but at the same time 1GPU and fps around 65 are working. In general, and in general I suspect that the game is not designed for multicore / multithreading / multiple gpu. The tech support said that there is a problem with the video card, I doubt it very much, tk. all tests (3dmark, unigine) and all heavy games (BF4, Crysis 3, GTA 5, The Witcher 3, etc.) run without a single lag or glitch. Oh yes, I forgot to add it was tested on Win10, maybe it's in the OS.