It took me a couple of weeks to get with a party that could clear Titan Ex. Some players just don't learn mechanics or have connection issues that make instant death mechanics very difficult to avoid, and the entire party is punished.

I had an easier time clearing T5 tbh. There are a lot of mechanics, but I feel that it's slightly more forgiving. Titan Ex has a much lower difficulty, but being unable to recover players who fall off adds spice lol.