# Is SL 12 much slower?

**URL:** <https://forums.steinberg.net/t/is-sl-12-much-slower/998474>\
**Category:** SpectraLayers\
**Created:** [July 3, 2025, 7:28pm UTC](https://forums.steinberg.net/t/is-sl-12-much-slower/998474 "2025-07-03T19:28:49Z")\
**Posts on this page:** 1\
**Showing post:** 63

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**Author:** ![MrSoundman](https://dub1.discourse-cdn.com/steinberg/user_avatar/forums.steinberg.net/mrsoundman/32/92285_2.png) [@MrSoundman](https://forums.steinberg.net/u/MrSoundman)\
**Post date:** [August 27, 2025, 1:18pm UTC](https://forums.steinberg.net/t/is-sl-12-much-slower/998474/63 "2025-08-27T13:18:53Z")

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On a PC with with NVIDIA RTX 5060 Ti 16GB, a 4min live recording with drums, bass, vocals, piano and guitar, Unmix Song at “High”:

SL12.0.10: 1m 28s  
SL12.0.20: 1m 11s

One thing that seems different is that the dialog box at first appears blank, and only after about 15 seconds the progress bar appears. If I time the process from when the progress bar appears, then it only takes less than a minute, so about 4 times faster than realtime. Nice!

I also notice in SL12.0.20 that the GPU RAM is now completely utilized and that the GPU usage is up to about 70-80% on average throughout the process.

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