Thank you very much for your advice. You can read about the way I worked here.

I did already take the last route you suggested (with 3 layers actually as I also sharpened the bottom part slightly) but at the point where the flicker was eliminated, it was already too blurry. I thought about outputing in higher resolution but I don't think my computer is capable of working with 4K, I'm working at 720p and one of the reasons for that is that 1080p in AE is too much for my poor old CPU to handle and also the elements I used for the crawl are created at 720p only.

I also couldn't get the depth of field effect to work in 3D, it applied the blur on the text in 2D, so in the whole shot the top third of the lines was blurred and the bottom untouched.

Also, in After Effects, I just had the original crawl underneath mine and timed it to that, would that be possible to do in the 3D program you're using? I could supply the 2D crawl as a PSD image and I'd basically just need that to recede at the correct speed under correct angle over the EpIV SE HD starfield and I could do the rest in AE. Would that be possible? If that's not possible, that's fine and don't worry about it (I know you have enough on your plate already what with the tooth and all) I'm quite satisfied with the way it looks now.