timelessness

Try turning of antialiasing in the Skyrim Launcher Options. Update 1.5 has been causing a lot of issues for people with getting pixelated graphics or random blocks like that, usually with 1.5 and ATI Catalyst 12.2 on the same system. Supposedly Catalyst 12.3 will fix the problem, but I don't hold much faith in it being a Catalyst issue. I've downgraded from Catalyst 12.2 to previous versions and continued having issues with antialiasing ever since Skyrim Update 1.5 came out.

Well, I've narrowed it down to an antialiasing problem. If I turn antialiasing and anisotropic filtering off, problems. If I turn on antialiasing, but turn anisotropic filtering off, problems. If I turn antialiasing off, but anisotropic filtering on, runs fine. I realized that it might be specific to antialiasing when I thought about the fact that no matter what my antialiasing settings were configured to, my shadows had hard, blocky, square edges, like it's not antialiasing at all. If I turn antialiasing off, it looks the exact same, but no severe lag when crouching. So, that said, anyone know what in 1.5 buggered up antialiasing?

I've also completely ripped out all my graphics drivers (deleted all files, cleared all reg keys, etc), reverted to 12.1 (which worked fine with Skyrim before), also reinstalled 12.2 (which was working fine for a week and a half before I started having any issues). So far, issue is still happening.

Completely wiped Skyrim from my hard drive and let it reinstall overnight. Still have the same issue with a clean install. And it's definitely not a problem with my save, because I loaded the save on another computer with no mods and then again with mods, and it works fine, no lag when crouching. Have all the graphics settings the same as well. And this test computer has a worse video card, but still is fine.

I am having a strange bug in Skyrim. I have the latest update through Steam, I've removed any mods I had installed (nothing fancy, one or two simple things, nothing that should cause this, especially since it happens with them removed), blew out all my INI files (not just skyrim.ini and skyrimprefs.ini) and let Steam replace them. I verified my cache, I defragmented my files, I have no viruses, I have nothing resource hungry in the background running, I physically cleaned out my computer (even though it wasn't overheating) just to be sure. The problem: When playing, if I crouch while in first person view my frame rate drops through the floor. If stand, it goes back to normal, if I go to third person view, it goes back to normal. If I go into any menus while crouched with the lag issue going on, my mouse stutters and is jerky in the menus. If stand or go into third person and then go into a menu, the mouse is fine. It doesn't not matter if I'm outside, inside, if there's water around, if there's no water around, if it's raining, if it's not raining, if it's snow, if it's not snowing, only happens as soon as I crouch in first person and stay crouched. This only started yesterday or the day before. Prior to that my game ran fine with settings on Ultra. I've tried putting it on low and the problem still occurs. I have a 3.4 Ghz quad core CPU (AMD), 1 GB GDDR5 (ATI) video card, and 12 GB DDR3 of RAM (no paging file, because with that much memory, who needs it?). The most my CPU heats up to is 40 C (under severe load), and my GPU heats up to 65 C (under severe load). Anyone have an ideas?