I've never had these kind of issues in the early stages of MSFS. Then after a long hiatus I've recently came back into MSFS and I have the problem I'm going to explain.

I use Rivatuner to monitor the resources MSFS uses on my hardware and I've noticed that now and then, apparently randomly but more frequently in intensive areas like London or on ground in a payware airport or in places with many AI traffics, my gpu fans accelerate from 2500rpm to 3500rpm/3800rpm for a few seconds before settling down again. These spikes do not affect my fps, do not cause stutters and doesn't seem to be caused by a spike in GPU temp as Rivatuner shows it remains pretty consistent. 

I use many other videogames and I've never had this issue with anything else than MSFS.

PS: my settings are Vsync on, 60fps limit set inside MSFS and my GPU is a RTX2070S with the latest drivers. 

Any suggestions on how to solve this issue? 

Hi,

I had same behaviour last year with a MSI 2080 RTX gaming trio. It was absolutely specific to MSFS, other GPU eater apps made nothing like this. It happened sometimes in the MSFS menus before I lauched a fly, but was clearly more frequent in areas like London.

It crashed my sim during the SU5 upgrade and i had to totally reinstall all the stuff from scratch, repairing didn't work.

Before reinstalling, I dismounted the card and took my old 1080 in place. I changed nothing since october, I think it is more secure.

If anybody can give any suggestions, it would be great.  

 

When is the last time you cleaned your PC, mainly the fans on the GPU. You may have an airflow problem causing excessive heat. 

Well that's exactly what should happen, and you should be happy that it does, otherwise your GPU would die a fiery death within minutes.

How can you be surprised that your fan speed goes up when the GPU is under heavy load?!?

It could be that they speed up unneccessarily high, and this you can control by adjusting your fan curves, in whatever software you use, or maybe in bios/uefi.

Edited July 11, 20223 yr by neumanix

Try and create your own fan profile. The standard fan profiles can do that when the card trips up 1C. So for example may be 2500rpm at 69C. Trips up to 70C and card goes to 4000rpm. Only takes few seconds to get card back down to 69C and 2500RPM. Repeat. Repeat. Repeat. 
You can eliminate that by creating a custom fan profile that has smoother transitions. Block standard fan profiles are always rubbish I find. 

In addition to the good advice about fan profiles (look into that for sure), also consider slightly underclocking your vid card.  This can offer a negligible performance impact but drop temps by a few deg C under load. 

It's especially useful for some cards that are factory overclocked and run a little hotter as a consequence.