Sorry that Lightroom is freezing and not loading as expected. Which version of Lightroom Classic are you using? To verify the version you're using : Choose Help > System Info.
Also, as Lightroom is running slow, could you please try turning off the GPU option from Lightroom's preferences? Go to Lightroom > Preferences > Performance tab > Uncheck "Use Graphics Processor" > Restart Lightroom and let us know if it helps?