So hoping someone here can help, I believe @Bob Scott may be running this CPU but I'm coming from the Intel world where I am very familiar with my P+E cores and using Process Lasso to maximize the P Cores for MSFS.  

My question is around how I would set up Process lasso to do the same with the new 9800X3D chip that I have coming.  Also, what should I know about any specific BIOS configurations?  

From my other post this is the system I just ordered to offset the challenges with the current system... 

9800X3D

Asus TUF Gaming  870-Plus

Corsair Vengeance DDR5 6000 CL30

BeQuiet 1200W PSU

Then I will transfer:

Zotac 5090

4xM.2 drives +1 SATA

Corsair 360MM ICue Cooling with 3 fan radiator (ordered the 4/5 adapter as well)

6 Addt'l system fans  3 front, 2 bottom, 1 rear

 

Thank you as always for the assistance! 

2 hours ago, psolk said:

So hoping someone here can help, I believe @Bob Scott may be running this CPU but I'm coming from the Intel world where I am very familiar with my P+E cores and using Process Lasso to maximize the P Cores for MSFS. My question is around how I would set up Process lasso to do the same with the new 9800X3D chip that I have coming.  Also, what should I know about any specific BIOS configurations?  

The cores on the 9800X3D are identical, and all have the same cache. Unless you write OS schedulers for a living, I would not bother with anything around core scheduling.

Cheers

 

47 minutes ago, Luke said:

The cores on the 9800X3D are identical, and all have the same cache. Unless you write OS schedulers for a living, I would not bother with anything around core scheduling.

Cheers

 

So let MSFS and all of my add ons just share all Cores?  I'm so used to offloading secondary processes to their own cores and trying not to let too many things run on the same cores as MSFS. 

For example I found this link on the MSFS official forums

https://forums.flightsimulator.com/t/process-lasso-for-msfs24/723604/18?u=psolk

Quote

I use the cpu sets feature. Have your applications running and then you can just select each one in the lasso menu and assign the program to a cpu set or to a cpu affinity. I use sets which is a softer way to do it but the instruction manual for lasso is excellent and explains it well. I don’t use most of the lasso features as it’s quite powerful but for basic setup it’s not hard, just read over the manual and it’s fairly intuitive. Search for it on this forum and you will find various posts about it too. I would not bother with a lot of the features, you simply want to assign MSFS to 3d vcache cores 0-7 and the rest of your programs to 8-15 if you have a 16 core AMD chip. Don’t touch the windows background tasks, just the programs you are running should be assigned. It’s possible to move the windows background tasks as well but I don’t mess with those. You can also easily toggle lasso on or off once it’s set up too see how it impacts your setup, for some it helps out with MSFS frame timing/fps and for others it doesn’t, it’s very dependent on your setup/applications running.etc.

 

Edited August 6, 2025Aug 6 by psolk

Keep in mind that post is referring to the vCache cores being 0-7, which is a 7950, not a 9800.

Keep things simple, I'm sure you'll be pleased with the performance.