# Cubase 10 not using all cores on 6950x

**URL:** <https://forums.steinberg.net/t/cubase-10-not-using-all-cores-on-6950x/117006>\
**Category:** Cubase\
**Tags:** cubase-10, issue\
**Created:** [November 17, 2018, 11:32pm UTC](https://forums.steinberg.net/t/cubase-10-not-using-all-cores-on-6950x/117006 "2018-11-17T23:32:33Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![uarte](https://dub1.discourse-cdn.com/steinberg/user_avatar/forums.steinberg.net/uarte/32/92404_2.png) [@uarte](https://forums.steinberg.net/u/uarte)\
**Post date:** [November 17, 2018, 11:39pm UTC](https://forums.steinberg.net/t/cubase-10-not-using-all-cores-on-6950x/117006/2 "2018-11-17T23:39:37Z")

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Curious if you did any registry hacks or other system tweaks for C 9.5? Because C10 should actually be performing better. On my 10-core (20 logical/threads) system, it’s definitely better so far. See this thread for more info:

> **[Cubase 10, Windows 10 and multi-core (14+ cores)](https://forums.steinberg.net/t/cubase-10-windows-10-and-multi-core-14-cores/116444)**
>
> Hi everyone, with Cubase 10, the way resources are addressed and used changed in order to overcome the much discussed MMCSS limitation and generally improve performance on high core-count machines. If you have a CPU with 16 or more logical cores...

And I suggest you reach out to Fabio, who has helped me in the past. He’s been on top of the multi-core/thread issue.

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