I have only 55,000 tracks and have been experiencing this problem!!
Thanks for contacting support, I’d be happy to take a look over the issue you are facing here. To be able to start providing troubleshooting suggestions, can I please ask for you to give me an overview of your setup using this guide here: I’m having a problem with Roon -- where do I report it?. When you mention that text is ‘Garbled’ how exactly does it look on your screen, would you be able to provide a screenshot of what you’re seeing? Some of our other users have reported that this behavior is exhibited when the GPU (Graphics Processing Unit) on a computer is using too many resources. Can you please try to also restart Roon and make sure that there are no other GPU-intensive applications running at the same time as Roon? Please let me know when possible.