Pulsator

Blue Moon First Peach Ale. Highly recommended.

It's an issue that only Steam can resolve. It'll happen, tomorrow maybe.

1 & 2. I would start by ensuring your graphics and audio drivers are up to date. Second, you can turn off anti-aliasing via the in-game console for a slight performance boost. You can also turn off anti-aliasing through your graphics driver control panel. To turn off anti-aliasing in-game: Press ` on your keyboard, followed by Enter. Type: msaa 0 3. Sounds like an input issue. If you're on a laptop, your touchpad might be causing this issue. Try disabling the touchpad device, or any additional input devices for that matter, like a gamepad, etc. 4 & 5. Crashes and minor bugs are to be expected since the game just launched, but if you could, reload an earlier save file and try again?

Turning off anti-aliasing should improve performance - slightly. You can do so via the in-game console, though it's only temporary and must be re-applied with every launch. Press ` on your keyboard, followed by Enter. Type: msaa X X being the variable, and in this case, you'll want to specify 0 to turn off anti-aliasing. You can also simply turn off anti-aliasing from your Intel HD Graphics Control Panel.