If you use Titler Pro as a video effect (instead of a generated media), you could add it to the media on the Project Media tab and it would be added everywhere that media is used at once.
You might test rendering in 8-bit which should speed things up. You might also test with GPU Acceleration in the plugin both on and off to see if one is faster than the other.
Please include this info in your next e-mail to me. You might also open the Info dialog for your Light Blends transition and check the “Disable GPU” option there to see if that makes a difference.
Joseph, the last contact you had with NewBlue, it was trying to use an Intel video card which is not supported. I do not see any e-mails from you after sending instructions on how to turn off the Intel card on May 7th.