Tearing graphics sometimes on Nvidia card

[NoBugs!]

I installed Xorg-hwe, kernel hwe and even installed the newer nvidia-384, nvidia-dkms-390, I still sometimes see large triangle tearing for split second on screen change. Especially on Impress full screen presentation, changing Firefox pages etc.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: xorg 1:7.7+19ubuntu7.1
ProcVersionSignature: Ubuntu 5.4.0-42.46~18.04.1-generic 5.4.44
Uname: Linux 5.4.0-42-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
.proc.driver.nvidia.gpus.0000.01.00.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0000:01:00.0'
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86_64 Kernel Module 390.138 Thu May 14 01:01:53 PDT 2020
 GCC version: gcc version 7.5.0 (Ubuntu 7.5.0-3ubuntu1~18.04)
.tmp.unity_support_test.0:

ApportVersion: 2.20.9-0ubuntu7.16
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
Date: Wed Aug 26 18:26:56 2020
DistUpgraded: 2020-07-19 22:36:12,015 ERROR got error from PostInstallScript ./xorg_fix_proprietary.py (g-exec-error-quark: Failed to execute child process "./xorg_fix_proprietary.py" (No such file or directory) (8))
DistroCodename: bionic
DistroVariant: ubuntu
DkmsStatus: nvidia, 390.138, 5.4.0-42-generic, x86_64: installed
EcryptfsInUse: Yes
ExtraDebuggingInterest: Yes
GraphicsCard:
 Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Dell 3rd Gen Core processor Graphics Controller [1028:054e]
   Subsystem: Dell GeForce GT 630M [1028:054e]
InstallationDate: Installed on 2013-11-23 (2468 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
MachineType: Dell Inc. XPS L521X
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-42-generic root=UUID=8e997c12-0ee0-422b-a7e4-a7cb0a74f38f ro quiet splash noresume vt.handoff=1
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to bionic on 2020-07-20 (37 days ago)
dmi.bios.date: 02/12/2018
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A17
dmi.board.name: 0C5Y96
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: A17
dmi.modalias: dmi:bvnDellInc.:bvrA17:bd02/12/2018:svnDellInc.:pnXPSL521X:pvrA17:rvnDellInc.:rn0C5Y96:rvrA00:cvnDellInc.:ct8:cvrA17:
dmi.product.family: 103C_5335KV
dmi.product.name: XPS L521X
dmi.product.sku: XPS L521X
dmi.product.version: A17
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.13.1+18.04.20180302-0ubuntu1
version.libdrm2: libdrm2 2.4.101-2~18.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.8-0ubuntu1~18.04.1
version.libgl1-mesa-glx: libgl1-mesa-glx 20.0.8-0ubuntu1~18.04.1
version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A
version.xserver-xorg-core: xserver-xorg-core N/A
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A
version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A