Pro tools 10 CPU 90/100 % , What's wrong?

[Wilfriedd]

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Hello all , i was running an old computer ( Quad core , Q9690) with 8 gb Ram on Win 7 x64.

All my bigger projects were almost freezing (around 95% CPU) even if i chose 4 core processors ( 4 THREADS actually) .
So i decided to buy a new computer with Windows 10 ( But since some of my plugins are discontinued and don't support Win 10 , i installed Win 7 x64 on another disk)

This computer is a brand new i9 - 10980h processor , 8 cores and 16 thread and 64 gb Ram . I was expecting better performances.

I did a test by opening a project which reached 80% CPU on my old computer ...
Well , now i can't even hit play , it has a strange behaviour , stuck to 100% CPU then going down suddenly to 75 , then rising to 80 , then 100% really quickly.

I verified in the options that all my threads was involved , and yes they are .

It's using 16 threads at max ( CPU LIMIT) 95 % .

So i decided to reduce this number to 8 , and then to 4 (like my old computer) . Here with 4 threads , it stays at 85% and barely play the songs ( Playback errors ..) . But when i go up with 16 threads , it's worse .

When i chose for example 40% for processor limit , Cpu is staying at 45% but with a RED BAR , that means if you hit play , you will suffer some nu errors .

I don't really know what's going on !! it's crazy!!!! Please help !!

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