DaVinci Effects always showing up as 'Media Offline'

Hi all, this has been an ongoing problem for me for some time. Almost universally, when I put any type of effect in the timeline, whether in fusion or something as simple as a 'Basic Title' from the effects library, the visuals show up as 'Media Offline' throughout the duration of the effect element. If I change ONE thing about the effect, suddenly it's back online. For instance for a basic title, if I add a letter it then shows up and plays through just fine. But only ONCE. If I try and play it twice it immediately becomes "Media Offlline" again and the only way to view it is to again change one element (add a letter, increase the size, change the colour, any change seems to work). It's very frustrating as the only way I've been able to play through a project is to go through every single title, add and then delete a letter in each one, and then watch it. If I want to watch it again, I have to repeat the whole process.
When I render it it comes out perfectly, and all the titles load every time I restart the program. But it's a nightmare trying to playback content and review anything effects based since as soon as I've watched it once they all immediately go offline.
Any and all advice very welcome!
When I render it it comes out perfectly, and all the titles load every time I restart the program. But it's a nightmare trying to playback content and review anything effects based since as soon as I've watched it once they all immediately go offline.
Any and all advice very welcome!