You’re right.
Not thinking clearly.
I corrected the reply above.
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I use acceleration sometimes during cruise and I found a program on flightsim.to called sim rate selector to be indispensable.
It gives you a visual on what rate you are at and has a quick return to 1x.
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I usually use it when i fall behind in group flights. Also use it when i’m getting bored with flying over a bigger pieces of water with not much to see.
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What you said about the cruise part is very true but I don’t think that the average sim pilot wants to spend all of his/her time in all of the stuff you’ve mentioned.
In reality, even in professional simulators ( important part of pilot education) the sessions are cut in pieces just to practice problem solvings.
Sometimes even a combination of malfunctions.
Engine fire, hydraulic failure, cabin airpressure etc.
Fortunately it’s highly rare that those errors occur at the same time but has to be practised
Happy 
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I’ve never used SIM speed acceleration because I find it doesn’t make any sense.
If I’m short on time, I simply schedule a shorter flight. 
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That’s what the Islander is for, busy 30 minute flights. And why I don’t bother with tubes, just biz jets, single pilot ones. I don’t have a copilot or navigator in my basement, so don’t fly aircraft that are missing them.
Although the log book is completely broken for short hoppers, 3 hours running a BN2 on repeat flights and it only gives me 17 minutes for the last return-to-base hop. I’m lucky if it logs 15% of what I fly, only properly tracks a single simple one leg flight in or just the last TO/L of a busy day. So I don’t give two’ for what the logbook says. Good luck getting any time logged running seaplane shuttle ops, I think it logs about 8 min per hour for those.
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That works, certainly, but what if I’m short on time but still want to fly to Hawaii from California? These options exist for these situations 
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Darkstar would work.
You make a point that is difficult to argue with.
@phutyoo @TheBlackWind977 Or you could fly the Darkstar with 4x sim rate and you’ll be travelling at roughly the same ground speed that the Space Shuttle did on re-rentry!
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Personally, I haven’t used the sim rate function much (actually I can’t get it to work in 2020 
) in FS.
But I’m not opposed to it. For my own part, I would find teleport very jarring, almost like skipping the takeoff and just putting myself on a 3mi final.
Immersion breaking, at least to me.
Speeding up the sim, on the other hand, just speeds up the process of cruise to me. No different than having a big tail wind. FWIW, most of my former Sim Instructors were not above throwing a 100kt+ tailwind on during certain portions of the ride, just to save a little time for the more meaty parts of the session.
I get it that one can always choose a faster aircraft. But, if I wanted to fly the Spirit if St. Louis across the Pond, I don’t think I’d feel that I was somehow “cheating” by not glueing my behind in my office chair for 33 hours.
To say nothing of how my wife would feel about me using a milk bottle for “lav breaks”! 
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I haven’t read all the answers, but from my experience, using it in various scenarios has been pretty useful.
It was particularly helpful when I was assisting in tweaking fuel flow on a flight model. Instead of flying for an hour for each attempt, at different altitudes and temperatures, I found that flying for 12 minute (in sim, few minute once acceleration ON) at 8x simulation rate (then extrapolating by 5 to get the fuel burn for an hour, resulting in a reasonably accurate fuel flow) was very efficient.
I also use 8x simulation rate when I’m flying for my career mode.ONLY If my game crashes or if I make a mistake, stalling before the landing etc,concidering I made the flight and instead of redoing it entirely, I restart it, make itn faster to shorten the flight time without corrupting the flight tracking in SimConnect, and then land properly.
In conclusion, I sometimes use it too when searching for a specific location or point of interest, making the plane move faster and saving time (especially when participating in the “Guess Where” thread). Slew mode combined with a simulation rate of 4 or 8 is fantastic for scanning the globe quickly.
edit
ho yeah so right forget about that one !! so many time on the friday community flight, if I m too fast I also reduce the sim rate, if I m too slow it give me a boost
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That’s a good way to think of it/look at it! And a nice insight into Sim instructors doing it too
You are braver than I, lol. Every time I’ve gone above 4x I’ve been thrown around as if I’m in a washing machine and had to perform a recovery from a ‘serious upset’. That was in smaller aircraft though, it might be very different in a bigger skytube
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You just don’t get the feeling of doing a proper flight using time acceleration in my opinion.
If you don’t want to do long flights don’t do them and just fly short hops instead.
It’s a great feeling to do a long haul in real time when you finally come to land.
I’ve never used it and would encourage others not to, but each to their own of course, it’s their sim.
when I was playing on my older setup yeah x4 was sweet spot cause I had huge stutter and jerky feeling. I m flying most of time in caravan btw
Now with my new setup (7900x3d with a RTX4080) it s very smooth, sometime gps struggle to follow the track and wave left & right, but using HDG mode it s ok
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The Caravan is the exact plane I was talking about! I haven’t tried 8x again since I got my new PC, I’ll have to give it another go then
Fuel usage is different.
Yes. Yes, it is.
But, as I’m not paying for the gas, I find myself agreeably untroubled by it.
In the end, I think it’s already been said that it comes down to how one wants to fly their sim. If one wants to fly one way or another, then that’s their decision.
But, speaking personally (and generally…I’m not addressing this towards anyone), I don’t agree with the notion that someone should only fly airplane X or can only fly distance Y because advancing time is, “doing it wrong”.
And FWIW, when I’m IRL flying one of those US east coast to west flights and I’m bucking 120kts of head wind, there are times where I’d give half my paycheck for a Sim Rate button!
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I really miss the jump ahead feature of Qualitywings. Back in the days, I used their 787 a lot for «long haul» flights fitting in my 2-3h sessions thanks to this feature. Simply do not have more time per session, thats why…
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It is. On the few times I’ve flown them, it’s difficult to go above 4. GA aircraft at least on my PC run in 8 just fine most of the time. I think it has to do with the capability of your system to keep up with rendering.
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