I think I understand when it states 'CPU LIMITED' you have replaced the processor on the mobo with a chunk of potato and 'GPU LIMITED' is when you have taken the video card out of the pc and put it on the top shelf in your closet.  However, what I don't understand is 'MAIN THREAD LIMITED', what could one do (software or hardware) to impact this?  I'm not looking for a guide, just more of a idea of why it would report this if you cant really do anything about it that is not CPU or GPU related.  Thanks for your thoughts.

4 minutes ago, Mike S KPDX said:

I think I understand when it states 'CPU LIMITED' you have replaced the processor on the mobo with a chunk of potato and 'GPU LIMITED' is when you have taken the video card out of the pc and put it on the top shelf in your closet.  However, what I don't understand is 'MAIN THREAD LIMITED', what could one do (software or hardware) to impact this?  I'm not looking for a guide, just more of a idea of why it would report this if you cant really do anything about it that is not CPU or GPU related.  Thanks for your thoughts.

A job in windows is schedule using threads. Each CPU has a core and hyperthread/simultaneous threads They all looks like thread to windows. The mainthread is the core of your CPU that is assigned to generate all the draw call to your GPU. That thread is 100% maxed.  Which means your CPU core IPC is not fast enough to drive your GPU. This is something you will see a lot in MSFS due to the limitation of DX11 multithreading.  So basically, because MSFS draws up to 650 miles of draw distance, Today's CPU can't keep yo with high end card. This will not change until the game is ported to DX12 Ultimate

2 hours ago, fogboundturtle said:

A job in windows is schedule using threads. Each CPU has a core and hyperthread/simultaneous threads They all looks like thread to windows. The mainthread is the core of your CPU that is assigned to generate all the draw call to your GPU. That thread is 100% maxed.  Which means your CPU core IPC is not fast enough to drive your GPU. This is something you will see a lot in MSFS due to the limitation of DX11 multithreading.  So basically, because MSFS draws up to 650 miles of draw distance, Today's CPU can't keep yo with high end card. This will not change until the game is ported to DX12 Ultimate

This is a prefect explanation. Congrats!!

Thanks, so to clarify a bit, upgrading to a CPU with a faster core speed (vs more cores) will probably not help this at it is related to DX11 software?

If you're Main Thread Limited you're in good shape. CPU Limited/ GPU Limited is bad.

We're all going to be Main Thread Limited for the next five years or so.

Stop counting frames and look out the window.

Fly On!

 

Edited September 4, 20205 yr by Will Fly For Cheese

I have the following issue.

After playing the game for an hour or so, the main thread counter (in developers mode) shows regular interruptions. Instead of a consistent bar, I see a teeth like shape and frame rate drops by half the number, and heavy stuttering occur.

I try to run as little services as possible, and the Process Lasso shows no serious other activities during the incident.

Any ideas?

 

Edited September 14, 20205 yr by bassbill

Seriously 3 separate threads on the exact same topic?

3 hours ago, captain420 said:

Seriously 3 separate threads on the exact same topic?

Even the complaints are multi-threaded.