The Rainmeter user is given complete control over when Direct2D is used and when it is not. Direct2D requires either Windows 8, or Windows 7 with the latest Platform Update. If not, it will fall back to the older GDI+ engine, and there will be no impact. Rainmeter will use the new Direct2D rendering by default if your system supports it. There will be a dramatic improvement in the quality of text you display in your skins. As a part of a bigger effort to move all of Rainmeter to the new engine, the initial change concentrates on improving the quality of text displayed in String meters. The biggest single change in Rainmeter is that we have moved from the older GDI+ display rendering method for applications to the newer and vastly better Direct2D rendering engine. There is never any need to uninstall any earlier version of Rainmeter to use the newest version. You can safely install the new release version right over your existing Rainmeter installation, and nothing you have done will be lost or changed. There are a lot of new features and capabilities in the latest Rainmeter.

Rainmeter how to uninstall skins