Doing the following actions in general until the program is updated will solve your slowdown problems. 1. Open the program by resetting it with the crtl+shift key. 2. Open a new project with the architectural template. 3. Tick Apply active pen and color settings when loading the slow project. HakanŞahin I don't understand how to apply your suggestions. If I open my unfinished project with an architectural template, I think my quantity will be lost. Instead, I want to go back to v6.0101, I can't do this now because I haven't saved the setup file, can you help me with how to install v6.0101?