Yesterday when I started Skyrim, everything in the game was in slow motion as if the slow time shout had been used. However I hadn't used the shout and and the same thing has happened to all my other saves. When I had stopped playing the previous night everything had been fine. I own the game through steam and the first thing I did was to verify my game cache, but that didn't help. I removed all the mods I had installed, but that still didn't help. I have now just completely re-installed Skyrim through steam, but the problem is still there. I have also tried using the console commands "set timescale to xx" and "sgtm x" neither of these worked. I am not stuck in walking and sprinting doesn't help either. I have tried starting a new character but I have the same problem. I also have odd popping noises that occur during the Bethesda logo when launching the game but the rest of the main theme is fine.
Any help that could be provided in any form will be much appreciated.