Probably everyone around me is complaining that these days gmail is super slow. Even I felt some hitches while accessing the gmail. The worst is when I deleted few mails from my home and they were back when I reopened my mailbox at office.
So i tried to clear cache, cookies, disable addons but nothing helped. So then I looked around decided to disable the customized theme for my Gmail Inbox and selected the default theme in Gmail Settings as show below.
Steps to change theme
1) Open your gmail Inbox
2) Goto Settings on top right corner of your inbox
3) Now click on the themes tab and you will see the above layout, select the classic theme and not the “Default” one.
Hope this helps.