[I EDITED THE TITLE TO REFLECT A NEW QUESTION: PLEASE SCROLL TO BOTTOM.]
I copied/pasted I think about 200 words or so from a FEMA site into VMS' titler, and it slowed to a crawl (pun not intended). I was using the horizontal-crawl preset (i.e., like a CNN lower-thirds, headline-crawl). Finally, the program stopped responding and I had to reboot. I reduced the word-count to maybe about 100 words, and it then worked as expected. Has anyone noticed a particular word-count that when pasted in titler, it just stops responding? Thanks!
Example clip below: