In Beta2, NG uses volume shadow copy service (VSS) to snapshot your system. We plan to get rid of it as soon as possible, because VSS doesn't fit our needs (it's very storage consuming, as you noticed; very problematic, can be disabled, and it's not supported on XP). That's why we're working on our solution, but we didn't have enough time to integrate it into this Beta2. So, as a workaround, we still use VSS with taking notice of all its disadvantages. Changing maximum size for a shadow copy storage is a bug. Sorry for that.
@Lord_Ami: maybe we were unable to find your web browsers in your system (I'll send you a PM how to fix it); preparing NG machine will be run in background (in Beta2 it's set to normal priority).
@Mahmudul Hasan Shohag, @sanandreas: thanks for your screenshots of UI flaws, I'll forward them to UI devs
So, at the end, if I understood well, without HW we lose around 30 percent of detection.
@neverseen76: since avast is connected to internet, we check if your executable isn't known among our users. If this is a new unknown application, it'll be analyzes in DeepScreen (with classic sandbox or with NG). If your PC isn't suitable for NG, we'll gather & analyze application's log from the classic sandbox. However, someone else will later analyze it under NG and we can compare those two logs from both engines. These results are shared immediately among our users and help new users to decide if this unknown application is safe to run or not (even if your computer doesn't have NG installed... other avast users analyzed it for you).