Comment # 175 on bug 1112824 from Robert Munteanu

(In reply to Dead Mozay from comment #174)
> (In reply to Robert Munteanu from comment #172)
> > (In reply to Dead Mozay from comment #171)
> > > Anyone can check
> > > > sudo zypper ar -f obs://home:Dead_Mozay:branches:openSUSE:Factory home:Dead_Mozay:branches:openSUSE:Factory
> > > and update with vendor change
> > > > sudo zypper dup --from home:Dead_Mozay:branches:openSUSE:Factory --allow-vendor-change
> > 
> > Cool, thanks for setting this up!
> > 
> > For the record, these are the instructions that worked for me
> > 
> > $ sudo zypper ar -r
> > https://download.opensuse.org/repositories/home:/Dead_Mozay:/branches:/
> > openSUSE:/Factory/openSUSE_Factory/home:Dead_Mozay:branches:openSUSE:Factory.
> > repo
> > $ sudo zypper dup --from home_Dead_Mozay_branches_openSUSE_Factory
> > --allow-vendor-change
> > 
> > And even though the package is a branch of openSUSE_Factory, which sounds
> > scary, it only brings in mutter with 4 additional patches:
> > 
> > The following 4 packages are going to be upgraded:
> >   libmutter-3-0 mutter mutter-data mutter-lang
> > 
> > In my testing the lag situation seems to be improved, although not
> > completely smooth yet:
> > 
> > - when hitting the 'super' key to open the applications menu, the delay is
> > much smaller, but still noticeable
> > - when pressings the 'show applications' button there is a definite
> > stutter/delay when the application icons should be flying in
> > 
> > So a definite improvement, but still not as it should be.
> > 
> > Host info:
> > 
> > $ inxi  -G -v 1
> > System:    Host: rombert.corp.adobe.com Kernel: 4.20.12-1-default x86_64
> > bits: 64 Desktop: Gnome 3.30.2 
> >            Distro: openSUSE Tumbleweed 20190301 
> > CPU:       6-Core: Intel Core i7-8850H type: MT MCP speed: 800 MHz min/max:
> > 800/4300 MHz 
> > Graphics:  Device-1: Intel UHD Graphics 630 driver: i915 v: kernel 
> >            Device-2: NVIDIA GP107GLM [Quadro P2000 Mobile] driver: nvidia v:
> > 418.43 
> >            Display: x11 server: X.Org 1.20.4 driver: modesetting,nvidia
> > resolution: 3840x2160~60Hz 
> >            OpenGL: renderer: Quadro P2000/PCIe/SSE2 v: 4.6.0 NVIDIA 418.43 
> > Drives:    Local Storage: total: 961.19 GiB used: 97.53 GiB (10.1%) 
> > Info:      Processes: 367 Uptime: 4h 16m Memory: 31.03 GiB used: 5.61 GiB
> > (18.1%) Shell: bash inxi: 3.0.32
> 
> that's why I wrote that partially solves the problem, if hyper threading is
> enabled, try disabling


Yes, with:

- your patches to mutter
- hyper-threading disabled in BIOS
- the latest TW kernel with the updated default config 

# CONFIG_PREEMPT_NONE is not set
CONFIG_PREEMPT_VOLUNTARY=y
# CONFIG_PREEMPT is not set

Then responsiveness is spot on.

I'll post another screencap for comparison.