Marmot
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Atarion, the reason is most likely in the drivers for your video card. Try to find and install a different version (newer or, conversely, older) – it might help. It is known that drivers can have errors that cannot be detected by simple tests, but they "appear" later in practice. :(
Воскресайте, камінні душі, Розчиняйте серця і чоло, Щоб не сказали Про вас грядущі: їх на землі не було…
(Василь Симоненко. Люди – прекрасні)
(Василь Симоненко. Люди – прекрасні)