welcom

Lags problem in the winter on the Manchester United Stadium in the corners
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Graphic

1280x1024
high
4x
on vsync
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pc

AMD Athlon (tm) II X2 240 2.81 cash 2mb

msi ati hd 4670 1gb ddr3

ram 3 giga ddr3
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driver 10.12

windows xp sp3
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Video of the problem frame

https://www.youtube.com/watch?v=wt5-Z9oWZjA