Yep, 100% this. It's the only racing game that has ever got my heart going in online racing. Last race I did few days back a perfect example, my heart rate was through the roof at the end. Started 10th, made it up to 5th before jumping up to 4th by getting in front of the guy on pitstop strategy. Rejoined ahead, but then for the remaining quarter of the race he was all over me, my consistent lap times and lines from the first 3/4's of the race were good. But all of a sudden when the heart rate goes up, I was missing gears, brake points, hitting apex curbs etc. Nothing else beats the iRacing buzz when it comes to multiplayer racing. You try so hard not ruin someone else's race, you go as fast as you can trying to improve that irating to get into the higher splits, that when it comes to the end of the race I end up feeling like an emotional wreck haha.
Quality drive around Spa, watched the whole video!