Slow after run and build

Realle really big beginner here.

I tried building my first scene. When i got an error. I googled the error and one of the answers was changing your build and run settings to android and back. It didn’t work (surprise surprise). I fixed the error by changing the code in the way the error said. Guitext to uiText. It worked. But unity is now running really slow in build mode. When i try to move an object it takes about 20 sec to move it. Does anyone know how to fix this and what i did wrong?

Please tell me if i need to show some code and where to find it so i can fix it :slight_smile: