This seems to be a memory load issue. I don't think that this is a memory *leak*, rather that there is a high demand of video card memory, or maybe bandwidth.
It happened that I bought a new video card several weeks ago, because the old one had fried itself in last summer. The new one is a NVidia GeForce GTX 750, running under Windows 10 with the driver version 355.60 - not brand new, but working.
The video memory consists of 2 GB of DDR5 chips, which seems to be enough to load the city, but processing the content at a resolution of 1920 x 1080, with High settings and maximum frills distance obviously took too much time to allow for a smooth movement in the streets. Every now and then the display would stall, and update again while the character had already moved on. I traveled through Minas Tirith, took the swift horses up and down, visited the two boys from Blackroot Vale in the Tavern, got lost while trying to find the picknick basket and then looked from the top over the Pelennor Fields, and all this time the game did not crash - I guess I was moving through the city for at least an hour, maybe even two. I hadn't thought of using CTRL + F to check the frame rate, but the performance was at times not really good (subjective perception).
My theory is, that changing the complete video content (like when a character leaves an interior location and enters the outside world) might be too demanding for video cards with less memory, so that they fail in some place or other, and the error terminates the game itself.
If this is true, the 'fix' for this issue would mean, that you have to lower the settings in this area drastically, or get a card with more memory. I know that this isn't a pleasant alternative, but I don't know any better.
Greetings, Polymachos
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