Hello,

 

Please help me find my FSX bottleneck.

Everything is fine mid air but when my plane is moving through a downloaded detailed scenery (f.e. Aerosoft airports) it gets really laggy.

 

MBO: ASROCK 970 PRO 3 R2.0

CPU: AMD FX X6 66300 3.5GHZ, SIX CORE

VGA: RADEON R9 390X, 8GB DDR5

HDD: SEAGATE ST1000DM003, 7200RPM

RAM: 8GB, DDR3

OS: Win 10, 64bit

 

I've read countless posts and some of them suggest that FSX has trouble utilizing multiple AMD cores. Correct? If yes, any way I could fix that?

 

Thank you!

I was also skeptic but switching from a 6 cores AMD to an Intel processor was like day and night. FSX runs much better with Intel and Nvidia.

FSX uses multiple cores just fine so long as it is FSX-SP1 or later.  I'd say your bottleneck is using an AMD CPU.  Intel CPU's just work better than AMD's when it comes to FSX.  The same goes for video cards, Nvidia just works better than Radeon.

Thanks guys,

 

I was hoping you won't tell me that the problem is a CPU, it's what i thought, too bad I didn't know that when I was buying a PC.

One thing to check is your affinity mask make sure it excludes Core 0. You can calculate what it should be using this tool. Just give it the number of cores, whether or not you are using Hypertheading, and what cores you want to use and it will calculate the number to enter in the FSX.CFG file.

 

http://www.gatwick-fsg.org.uk/affinitymask.aspx?SubMenuItem=hardware

Excellent link, brother, cheers.