No, I have to set it every time I start the game. It’s definitely not a placebo. For example, if I don’t set it, the stutters will start eventually (2-3 seconds long) and I hit the windows key and they are gone. Go back to giving the game focus and they are instantly back. Hit windows key, remove focus, and they are instantly gone again.
Obviously, I can’t play the game like that. Lots of digging around was done over on Reddit to try and figure out what was going on. It was discovered that setting the game’s priority to low was a solution if the above behavior was true. Like I said, it’s not going to be the cause of all stutters, but if hitting the windows key instantly stops the stutters, then the low priority tweak is a solution.
I’m a game developer and it makes sense if flight simulator is using a windows background service to download data. If Windows also has Game Mode activated, the game can try to steal all CPU resources which will choke the background windows service from doing it’s job, and thus cause stuttering as the game is trying to wait for a response from the background service before continuing. I’m obviously not saying that this is definitely what is happening, but it’s going to be something along those lines. It was fixed in 1.8.3 but it’s back again in 1.9.3 only slightly differently. In 1.8.3 it would happen as soon as I started a flight, and persist almost always until low priority was enabled. In 1.9.3, the stutters don’t start for 30+ mins, but once they do, they are persistent until I set low priority which instantly fixes it.