For the millionth time, this is (in most cases) NO LONGER NECESSARY.
Initially the Ubi splash screen was preventing some ATI cards from clocking up to 3D speed, instead getting stuck at the video clock speed used for the logo.wmv - probably because the game was running in a pseudo-windowed fullscreen and not being recognised as a proper 3D app by the card.
That issue was solved several patches ago (I'm the one who figured it out, and I no longer need to delete/rename it). Only do this if:
A: you check your video card whilst the game is running (with GPU-Z or similar) and discover that your card isn't clocking to full speed, or
B: you just don't want to see the intro video anymore.
Removing/renaming it will not give you ANY fps boost unless your card is underclocking, which, after the current patches should no longer be a problem.
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