FPS drops during the flight

[Maverick]

The game runs perfectly fine at start. The FPS varies at around 80. However, the FPS will drop from a double digit figure to a single digit figure (i.e. FPS = 2) during the flight. I have updated all drivers on my PC and did all the settings recommended on the web but there is still no use. I'm wondering if anyone else is experiencing the same and how is this gonna get fixed. This is so annoying as I built my PC especially to play flight sim! My PC specs = Geforce RTX3080; i7 11700k; 16GB ram

[★Macman★]

Sounds like a Power issue with the 3080. What is your PSU wattage? Is it GOLD rated?

[Maverick]

it is 850W gold rated

[Mondyrocks]

Installed on hard disk or ssd??
Internet speed (the sim downloads data on the fly, meaning a slower speed will take longer to download, creating stutters and drops in frame rate)??

[Maverick]

It is installed on SSD.
I played with WIFI but I'm not sure if the internet speed really gonna affect the FPS.

[Mondyrocks]

Maverick님이 먼저 게시:

It is installed on SSD.
I played with WIFI but I'm not sure if the internet speed really gonna affect the FPS.

If the game is having to wait for data to download then it will affect your fps.

You could be right though, it could be something unrelated.

Btw, wifi is no problem, my laptop is wifi and I still get 350 - 400mbps download speed :)

[Maverick]

An article says it could be due to the CPU overheat. However I've already installed a liquid cooler so it would be fine... unless it's not working properly...

[Maverick]

The CPU temperature was maintained at 70 degree c and the CPU usage was around 15-20%; whereas the GPU temperature was maintained at around 80 degree c and the GPU usage was around 99%. When the FPS dropped both CPU and GPU utilisation dropped to 7%... The fan speed increased but seems no difference in CPU and GPU temperatures... Strange thing is that when I pause the game and it returns to the options menu, everything returns to normal, but it drops back down when i entered back to the game...

[-OrLoK- Слава Україн]

could be all sorts of issues *but* I too sometimes get big fps drops after some time in smooth flight.

had one just now as some other users flew near over London.

turning off MP gave me a few fps back and enough to land bit it wasn't pleasant or smooth.

my 250gb rolling cache *should*(?) be enough but who knows?

I'd like to say it *feels* like it happens when the game is sending/receiving data but thats just a hunch.

I'm only on a 2080 sc with a 850gold psu and also liquid cooled in a full size tower from Corsair, I don't think heat (where I am) is an issue but might be in OP's case but I think its an inherent issue rather than a simple hardware one.

[Maki Nishikino]

Pretty solid GPU and CPU however I recommend you bump your RAM up to 32 GB. Can't guarantee it will solve your problem (probably won't given how little RAM MSFS uses post SU5, this will probably change as early as SU6 knowing what is to come) but for rig built especially for MSFS it makes sense to go 32 GB, don't see why anyone would have a top-shelf PC with just 16 GB of RAM in 2021. Running an i9-10900KF / RTX 3070 / 32 GB RAM / SSD fully maxed out aside from resolution scale at 100 is a pretty smooth ride for me.

[★Macman★]

I wonder how your install is, if all Chipsets (specific to your motherboard not by available updates) & Drivers are setup correctly first. Fully Updated version of WIN10 Standard/Pro?
If using a ROLLING CACHE then put it on the C: DRIVE (hopefully m.2) NOT a 2nd Drive even if it's SSD. You can test this best by Deleting the ROLLING CACHE and using none to compare, then if better create one on your C: Drive.

[MONZUN]

Maverick님이 먼저 게시:

It is installed on SSD.
I played with WIFI but I'm not sure if the internet speed really gonna affect the FPS.

THIS is the problem i'm nearly 100% sure. I can tell you out of 140 hours of experience playing this game that you need a great and fast internet connection if you enable all live services. i'Ve a 250mbit down and 50mbit up connection and i've monitored the internet use whilst flying over different areas in the world.

some areas like los angeles were extremely heavy on the internet streaming and the game used between 10-30mb/s at times (MEGABYTE NOT MEGABIT!!). its crazy as 30mb/s should be something around 240mbit down o_O despite my connection i had and have stutters in some parts of the game aswell but those stutters usually are in heavy areas like los angeles AND only very minor (like it drops 1fps for a second which makes it stutter for this moment a bit but still annoying).

if you internet is not anywhere near great this will most likely be the culprit for your extreeme framedrops

i mean lets be honest here, it can't be anything else because you have a great cpu and gpu. more than enough ram

(don't let ppl tell you to get 32gb of ram because its ridiculous. the game never uses more than 9gb of ram with everything else active on my system and i'm running it between high and ultra settings (important stuff like volumetric clouds, textures vector data, texture synthesis etc all on ultra). this game needed more than 16gb of system ram before the "optimization" patch on july 27th. afterwards it doesn't and your 16gb of ram are MORE THAN enough unless you have like 50 other apps opened whilst playing the game or unless you leave browsers with many tabs open like chrome with 100+ tabs or firefox with 150+ tabs. only then you will need more ram because the browsers will eat up so much that 16gb might get filled and/or even overfilled whilst running the game too..)

you have the game installed on ssd too so it can't be your system, its very unlikely. i've a complete trash system with a gtx 980 ti, 6 years old and a ryzen 2600x which is also much slower in singlethread than yours and i'm still running the game more or less buttersmooth. on 30fps capped but at least i nearly never drop below 30fps unless i'm flying over manhattan and even then i only drop a little under 30fps from time to time, not regularly. as mentioned over los angeles, miami etc, over all those heavy areas i only have tiny stutters from time to time and neither my cpu nor my gpu are close to being fully used so i'm very sure its the servers being the problem here (my connection is unlikely to be the problem too but yours might be because it sounds like your connection is complete crap). considering my superold system i'm actually happy to be able to run the game mostly maxed out at 30fps :D:D:D its a miracle :D

also, disable and delete the rolling cache. its complete crap and leads to much more stutter than without using it. i compared it aswell, definitely a nogo

edit: best you can do, if possible for you, would be to turn off and delete the rolling cache (also don't use any manual cache and you don't even need a page file as the game doesn't use the page file anymore after the optimization patch. i mean it uses 100-200mb of page file sometimes for me but thats not even worth mentioning. i put my pagefile to 2gb only and i haven't had a single problem with any game including this compared to how it was before when windows managed it and put it to 15gb rofl.. what a joke windows pagefile managing is :D:D:D) and get a good internet connection, at the very least 200mbit down with good latency. if its not possible well, at least keep all that in mind until you can get a better connection ;)

[Maki Nishikino]

It really isn't a problem of weather or not you play on WiFi, I'm on a 500/500 plan myself and generally it's been peachy pre-SU5, that all went downhill post-SU5. Many, many people with plans that far exceed the norm in speed (and even hardwired) have problems.

I was stuttering when I used to have 16 GB RAM on my last PC (which had a i7-8700 / GTX 1070). Right before I got rid of that PC I upped it to 32 GB and it was fine and with my new PC I went with 32 GB. Before SU5 I was seeing RAM usage in the 20s with ease. SU6 will add things in MSFS that will make you happy for having 32 GB of RAM.

I personally don't recommended anyone who is building a high-end rig in 2021 to go with 16 GB of RAM and especially not for a flight sim, RAM is cheap and if you can get yourself a 3080 you can get yourself 32 GB of RAM and you will thank yourself for doing so. I have two rigs and my other one is a dedicated flight sim rig. I plan on swapping out the PC for a new Jetline Systems at some point and will go 64 GB RAM, overkill for most however I don't feel 32 GB is.

[Manwith Noname]

AI or ground traffic.

[Twelvefield]

Manwith Noname님이 먼저 게시:

AI or ground traffic.

Bingo. Turn off all the AI and ground traffic. Beyond that chugging your render cycles, there are bugs that come and go with the traffic interfering with your cockpit controls. I've noticed when that happens my frame rate spikes.

Adding more RAM is definitely a good thing. Your 3080 will have plenty, but system RAM is cheap and helpful. I've gone to 64, I've often enough clogged up 32 GB just looking at my computer sideways. Mind you sometimes I run massive graphics files so I need that extra overhead, it's just nice that I can also use that RAM for gaming.

[Maki Nishikino]

Twelvefield님이 먼저 게시:

I've gone to 64, I've often enough clogged up 32 GB just looking at my computer sideways. Mind you sometimes I run massive graphics files so I need that extra overhead, it's just nice that I can also use that RAM for gaming.

64 GB would indeed be helpful to some simmers, I know in one of the flight sims I play there is a map that will blow through 32 GB like nothing.

For the rig I use most of the time which has an i9-10900KF / RTX 3070 I will stick with 32 GB however for my dedicated flight sim setup which I am in the process of upgrading I'm going with 64 GB.

Don't mean to sound rude in any way but building a rather top-shelf rig and sticking just 16 GB or RAM in it seems bizarre to me, go 32 GB. I even have a game that isn't flight sim related at all where I've heard of some peeps with 16 GB struggle.

MSFS might not currently really use much RAM but it will again at some point. OP you have a solid GPU and CPU but that RAM is going to hold you back in being able to enjoy MSFS to it's fullest once we get RAM eating features again.