Avoid loading plugins in wp admin

Hi
I have installed a lot of plugins on my WordPress website but I need all of them.
But these plugins are making managing and adding content to my WordPress website really slow and hard… (loading of admin pages and updating posts is slow)
Could you please help me avoid loading the codes of these plugins on all the pages of the admin pages of my WordPress website? I want to avoid loading these codes from all of the admin pages except the plugin’s Settings page.
Thanks.