Does anybody know how to fix d3d device being lost?

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I’ve seen the “device lost” problem for two reasons:

  1. Because of the “MPO” (mis)feature in the NVIDIA graphics drivers. There’s a registry file you can load to fix this, if it’s the reason. (Typically, this will make overlay windows and menus turn black a while before you’d get a device lost problem)
    After updating to NVIDIA Game Ready Driver 461.09 or newer, some desktop apps may flicker or stutter when resizing the window on some PC configurations | NVIDIA

  2. Because of some hardware problem in CPU / Motherboard / Power supply / Graphics card. For me, upgrading the power supply to be significantly more than “should be enough,” and then moving the graphics card one slot away from where it was, solved the repeated problems.

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