Send out scouts on autexplore. Build your colonizing capital, take colonization cap and flagship out to cap no more than 4 planets.  2 Civilian tech, research 1 tactical slot on capital planet, then build 2 military tech.  Research repair station, build two repair stations and four turrets around it if pirates are heading for you.  Defend wave 1.  Snatch no more than four planets while waiting for pirate attacks.  Only research planet upgrades necessary to get from negative income on them.  Research two more cap ships and one fleet supply.  Build 2 military stations on one planet that you capped.  Spend no more.  Research four titan upgrades and purchase titan shipyard. Sell excess ore over 1200 or crystal over 750.  Begin building Titan.  Defend second wave pirates, or if they attack planet without defenses let them kill mines and rebuild after they leave.  The pirates don't yet have pillagers, so you won't lose the planet.  You should have Titan by mid third pirate attack.

Thank you very much, but cbrays way is faster. I will try it sometime in a multiplayer partie though. Maybe it works too ^^

Another easy way is to a super fast Titan is to just make a custom map in Galaxy Forge and give yourself a Titan, or a ton of $$$ and resources, and 4 military labs.  then it just takes a few minutes game time to research and build one.  I would still consider it cheating, but you don't need a cheat code to do it.  Plus if you're making a custom map, you can also design the opposition to whatever you feel like experimenting your titan against. 

dude, titans are extremely easy to get, if you don't have the patience to build a titan, you shouldn't be playing this game at all.

ALso BTW, you can set the settings on faster settings and overclock the time by 4X, that is why it is a 4X strategy game.