I have that one too. I played it a lot as a kid and didn't find it unplayable, but the only PC I had at the time was an ancient IBM XT so I didn't have anything to compare it to. The control issues were mitigated by the fact that I also own the Playstation mouse, because I also have XCOM and there's no way I was going to play that with a controller.
Sim city was atrociously slow on my 386 / 33 MHz (and 16MB of ram). Mmh brother had a 486 with 66 MHz, that’s what you needed to actually play the game.