Kodi videos play in slow motion while full screen

Hi there, I haven’t found a solution on this issue anywhere, so I’ll ask.

I have a Macbook Pro Mid 2010 with Kodi 17 installed. When I try to watch a video with Kodi, it plays like in slow motion with fullscreen, but it plays perfectly okay if Kodi is windowed.

How can i fix this issue?

Thank you in advance