If you do a post and notice the site is running slow do this, as it will as times try this,as I know it works.
Once I have done a post and it is taking forever to load, which is beyond my control.
What I do is wait until the button with home has loaded.
I click on that and it brings me home again.
I have then checked that the post I have just done did download, and it had.
So if this does happen to you this is an effective way to get by the waiting time of the page to download.
I today also found that if you place your mouse up where the button home would be.
And it should show the word HOME when you are in the right spot. Click there and it will bring you home and post is still intacked.
Sometimes it may even help if you restart your computer to.
Another way is to close that page down and reopen it on a new page.