Well, I'm not, and I know what I'm talking about. Unlike you, apparently.
*searches the web a bit*
https://en.wikipedia.org/wiki/Infinity_Engine
It was originally developed by BioWare for a prototype RTS game codenamed Battleground Infinity, which was ultimately re-engineered to become the first installment of the Baldur's Gate series.
There you go.
Now, before you start spouting all the usually marketing driven BS that uninformed kids think they "know", let me clarify something to you: just because most people think something is good, doesn't mean it actually is, and just because something may not be as good as you want it to be, doesn't mean you can't enjoy it.
I'm actually playing Baldur's Gate Enhanced Edition at the moment, and plan on completing it and taking my character to Baldur's Gate II Enhanced Edition in the not too distant future. Even though I think the combat is terribly clunky and needlessly slow, even though the story is god-awful and even though the choices and consequences amount to a 5 year-old's notion of good and mean. I play it because I enjoy playing it, and I enjoy it despite its flaws.
That's not rude of me to say, is it? I hope it isn't.
:EDIT:
And because I think of myself as an initiate in proper RPGs, let me also say that real time with pause is never a good thing, it's always a compromise, and it's always better to go with turn based or with real time. Think Silent Storm or Jagged Alliance for good TB. Think Fallout Tactics or Arcanum for TERRIBLE TB/RT hybrid. Think Starcraft for proper real time strategy. About the only passable TB/RT hybrid I can remember is Temple of Elemental Evil.
You might have not played any of these games, however, so listen to those who know better.
Baldur's Gate took it to another level, however. It took a turn based rule-set and jammed it into a real time engine. The result is that awful syndrome of characters standing still for no obvious reason, having to way for their "turn" for no obvious reason, and all that clumsiness of a clearly badly designed combat system. There are plenty of phase based games (which is what Baldur's Gate actually is, a phase based game) that behave much more naturally and predictably. Think of World of Warcraft, for example. Most MMORPGs even. They're designed like that for different reasons, mind you, there's no real advantage to such a system if we're talking about single-player RPGs.