Howdy Àzera,
Normally this is either a UI issue, driver, or a connection issues. Lets try the following steps to see if they help!
If these don’t help please get us a DXDIAG so we can get a better look into this for you.
(Please put it in code blocks to make it easier to read. To do that past the report in a chat box. Then right click “Select All”-should highlight everything. Next click on the little </> symbol on the bar below the chat box.)