I have problems with my novetus version, that's been happening for 2 years now. When I play something in 2006 or 2007, it lags a lot. I have the newest version of Windows 10 and the newest version of Novetus, and I want to play 2007 Roblox just like in other YouTube videos. Anyone knows how to fix this?

Honestly, 2007-2009 is just very clunky, it's probably not fixable. As a few people have tested, even the Physics can barely be handled on 2007 and that was proved on a literal RTX card on a Windows system.

versions 2006-2007 are incredibly laggy, you have to have a beefy computer to get a stable framerate