emails very slow to open

I’m using version 7.1.31849.0 and since 22 April 2018, my emails have been very slow to open. Any suggestions please? 

It could be because of a slow server or connection.

One thing you can do to improve this if you are using IMAP is enable the offline use setting. This will download the full message contents when it arrives, so there should be no waiting when you click on it later.

Go to Menu > Tools > Accounts and on the IMAP tab select the offline options.

Thanks… I have done this and it seems to make difference. Other web pages load without any problems, so I don’t think its a slow connection issue.