After changing domain problems with the media

I changed from domain1.com to domain2.com
all the media show most of the times, but they have wrong link
https://domain1.com/wp-content/uploads/2016/04/DSC_2067.jpg
instead of
https://domain2.com/wp-content/uploads/2016/04/DSC_2067.jpg

Why this happens ?
Makes site very heavy and sometimes photos are not opening.

Thank you

PS: i read somewhere

Trying going into Settings > Media and set the upload dir to blank (so it uses the default).
Don’t forget to keep a copy of what it was before, just in case.

But there not any kind of settings like this one.