adding text to titles

I don't think there's anything you can do to change this -- though it's also not something that's often reported. I'm not experiencing anything like it.

You can try going to preferences and turning off GPU accelaeration -- a misleading preference that really does almost nothing to improve performance but can sometimes cause problems. 

But it's more likely something on your system. Too many fonts or corrupt fonts maybe. You don't say what CPU you have but that could also be a factor. But it's hard to say.