Final Cut Pro 10.6.5: Broken Generators and Titles

So, a while ago some (a lot) of my templates in titles and generators broke. I had been using some of them for a long time without any problems prior to that. The text is all jumbled and looks like gibberish and whenever I try to use one of the broken templates, Final Cut starts freezing and crashing, so it's literally unusable. This is what it looks like:

The font in this particular one is Helvetica, it's not missing or corrupt. Changing the font style fixes the text problem but the template is still very slow and makes FCP act all weird, so this is obviously not a fix, the templates are still broken and not functional.

I couldn't find anyone with the same problem but I've read so many possible solutions so before you suggest something, here is everything I've tried (with no effect):

• Literally deleting all motion graphics and adding them again
• Uninstalling and reinstalling FCP
• Making sure I have enough disk space
• Deleting Chrome and everything Chrome-related because apparently it causes problems on Macs
• Checking and validating all fonts
• Deleting all FCP preferences
• Always using legitimate templates and fonts

FCP and my MAC are not experiencing any other problems or slowdowns if I'm not using the broken templates and titles, so I'm fairly certain that they are the problem. If it were 1-2 templates I would just wave it off and live with not being able to use them but it's a huuge portion of my template arsenal and it's happening with most of the new templates I download too. It seems to happen with templates with text in them, so it might only be connected to that but I'm not sure.

Any help is appreciated, I'm desperate.