Sitefinity 8.2 Initial Loaded issue

I developed a cms on Sitefinity whole site is working good but i am facing some issues, as i open the site it takes about 2 minutes to load first time and secondly it expires session after every 10 minutes and redirected to Login page and when i logged in again it takes about 30 seconds to load again. If anyone know about these issues so kindly let me know the solution.Thanks