Reran my tests with the 9950x3d this time making sure my resolution was at 1080p 
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To recap, I just upgraded my 7900x3d to a 9950x3d a couple of weeks ago and have been tweaking & testing. I wanted to know if I need to further tweak the 9950x3d cores/CCD’s (i.e. Process Lasso) to get optimal performance with the sim. I previously ran the test in 4k (see above) however @BegottenPoet228 recommended I run the test in 1080p as this resolution puts more stress on the CPU.
Test Flight Set Up in 1080p:
SU2 and spawn on the default runway at KJFK with the FA/18 Hornet, take off straight out leveling off at 4000ft, cut throttle to 50%, fly over Manhattan, bank left after crossing Hudson River and land at Newark. The test encompassed everything from sitting on the runway at Kennedy to coming to a full stop on the runway at Newark. I sat on the runway for about 30 secs before starting CapFrameX to allow for everything to load in. All tests were run with time set to 12 UTC and empty rolling cache and no 3rd party add-ons.
Tests were run with a Sapphire Nitro+ 7900xtx at default settings (no OC). 9950x3d PBO was turned on with the following settings:
PBO: Advanced
PBO limits: Motherboard
PBO Scalar: 10x
Max Boost Override: +125
Curve Optimizer: By core (undervolted each core using CoreCycler utility)
Other misc settings:
- Win 11 Memory Integrity Off
- Game Mode On
- HAGS On
- ReBAR On
- Windows Gaming Optimizations On
- Monitor refresh rate 144Hz
- Freesync On
- Vitualization Off
- Hyperthreading (SMT) On
DDR5-8000 (CL36) memory OC:
All tests were run with an empty rolling cache (I would delete the cache file prior to starting the sim for each test). Other MSFS 2024 SU2 settings:
Test 1: 1080p w/ultimate power plan
Test 2: 1080p w/balanced power plan
As you can see above, the balanced power plan averaged 101 fps versus 89 fps for the ultimate power plan. So while this does show the balanced power plan as providing more fps at 1080p, the advantage disappears at 4k as they both averaged 68 fps (as per my previous 4k test above).
Again, I am concluding that no cpu CCD tweaking is really necessary on the 9950x3d with MSFS 2024 at 4k resolution (MSFS 2020 may be another story). All tests in 4k and 1080p ran as smooth as butter with little to no micro stuttering. Process Lasso may squeak out a few more fps but with the smooth fps already being achieved, I don’t think it would be worth it. I think for the most part, Process Lasso was being used by simmers to mainly eliminate the micro stutters caused by the 2 unoptimized CCD’s. I believe AMD/Microsoft have come a long way to optimize the 2 CCD’s of the 9950x3d.
You can click on my gamer pic for my full PC specs.