Scripture locks up
Depends on which build of version 7 you are running. The latest production build is 188.8.131.52, but there is a Beta (testing) build 184.108.40.206.
That said, what are your system specs, especially the graphics card or chip in the computer and does it have a Solid State Drive (SSD) or a spinning disk Hard Disk? Low end graphics and older spinning platter hard drives can cause this issue, but without knowing what hardware you have it's impossible to tell for sure.