So I finally got it, after a month of playing, I got the WR. I want to thanks Azekif (Kuba) since I learned from his run, and also for his help alongside other members of the community. I'm not sure if I want to "defend" the WR since I don't intend on being the "best", I just wanted to say I got a WR once in my life, because it can go lower, I was aiming for a 19:30, but I lost some time, and then, I got 10 seconds more on Lee Hong as a surprise, so it can reach 19:20 and more probably. I'm sure I will be passed anytime soon. Maybe if it is less than 19:20, I can try it again, but I think it's enough speedrun for now. I will probably stop doing runs for 1 or 2 months, and either get back to improve the time, or I will start Blood Money since it's the next game on my list.
From this moment main timing method for fullgame runs is LRT (Real time without loads)!
H2:SA and H:C is last Hitman games with RTA-timing for some reason. Full functional load-remoover by Kennert is available 3 years yet.
Please be sure you enabled "Game time" in AutoSplitter settings (Edit Split