CompizConfig maxxing out 100% CPU

[trailingedge]

Very difficult filing this report, as system almost unusable since latest CompizConfigSysMgr update.

Monitoring with TOP, Compiz hogs resources, at 100% or even 106%, sometimes relinquishing resources after 2 or 3 minutes lag.

If Kill command for Compiz PID, then sometimes Compiz will recover, more likely, Compiz freezes whole system, requiring reboot e.g. from terminal.

Lag in compiz confirmed using different software: LibreOffice 5, LibreOffice 6, Firefox

Many complains about CompizConfig update on AskUbuntu:
https://askubuntu.com/questions/1010634/ubuntu-16-04-compiz-uses-way-too-much-cpu
https://askubuntu.com/questions/1006621/2-15-18-compiz-update-broke-unity
https://askubuntu.com/questions/1010038/unity-top-bar-and-launcher-disappeared-feb-24-2018

Tried switch to LOWGFX mode, but problem with Compiz persists. Problem is worse for me since latest Compiz update, but as filed previously, I was getting similar behavior from Ubuntu LibreOffice 5, with previous version Compiz.

running Ubuntu 16.04.04 64-bit
Nvidia: GeForce 6150
all updates applied

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: xorg 1:7.7+13ubuntu3
ProcVersionSignature: Ubuntu 4.4.0-116.140-generic 4.4.98
Uname: Linux 4.4.0-116-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.1-0ubuntu2.15
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
Date: Wed Feb 28 10:56:14 2018
DistUpgraded: Fresh install
DistroCodename: xenial
DistroVariant: ubuntu
DkmsStatus:
 bcmwl, 6.30.223.271+bdcom, 4.4.0-103-generic, x86_64: installed
 bcmwl, 6.30.223.271+bdcom, 4.4.0-104-generic, x86_64: installed
 bcmwl, 6.30.223.271+bdcom, 4.4.0-109-generic, x86_64: installed
 bcmwl, 6.30.223.271+bdcom, 4.4.0-112-generic, x86_64: installed
 bcmwl, 6.30.223.271+bdcom, 4.4.0-116-generic, x86_64: installed
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
 NVIDIA Corporation C51 [GeForce Go 6150] [10de:0244] (rev a2) (prog-if 00 [VGA controller])
   Subsystem: Hewlett-Packard Company Presario V6133CL [103c:30b7]
InstallationDate: Installed on 2016-09-02 (544 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
Lsusb:
 Bus 001 Device 002: ID 0c45:62c0 Microdia Sonix USB 2.0 Camera
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: Hewlett-Packard HP Pavilion dv9000 (KB189UA#ABA)
ProcEnviron:
 TERM=linux
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-116-generic root=UUID=cbb3b226-d5e3-4f5a-b017-90f3a2ac981e ro drm.debug=0xe vesafb.invalid=1 plymouth:debug nopat
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/22/2007
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: F.3D
dmi.board.name: 30B9
dmi.board.vendor: Quanta
dmi.board.version: 65.2B
dmi.chassis.type: 10
dmi.chassis.vendor: Quanta
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnHewlett-Packard:bvrF.3D:bd11/22/2007:svnHewlett-Packard:pnHPPaviliondv9000(KB189UA#ABA):pvrRev1:rvnQuanta:rn30B9:rvr65.2B:cvnQuanta:ct10:cvrN/A:
dmi.product.name: HP Pavilion dv9000 (KB189UA#ABA)
dmi.product.version: Rev 1
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz 1:0.9.12.3+16.04.20171116-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.83-1~16.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 17.2.8-0ubuntu0~16.04.1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 17.2.8-0ubuntu0~16.04.1
version.xserver-xorg-core: xserver-xorg-core 2:1.18.4-0ubuntu0.7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160325-1ubuntu1.2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2
xserver.bootTime: Wed Feb 28 09:26:06 2018
xserver.configfile: default
xserver.errors:
 Failed to load module "nvidia" (module does not exist, 0)
 Failed to load module "nvidia" (module does not exist, 0)
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.18.4-0ubuntu0.7
xserver.video_driver: nouveau

[penalvch (penalvch)]

Given this issue occurs after a compiz update, moving to compiz.