Is the problem occuring in the safe mode?

You can try to Refresh Firefox.

Start Firefox in Safe Mode {web link} by holding down the <Shift> (Mac=Options) key, and then starting Firefox.

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?

https://support.mozilla.org/en-US/kb/firefox-slow-how-make-it-faster

https://support.mozilla.org/en-US/kb/firefox-uses-too-many-cpu-resources-how-fix

https://support.mozilla.org/en-US/kb/firefox-hangs-or-not-responding

The problem is still there

but the problem still in Safe Mode as well

Application Basics

Name: Firefox Version: 53.0.3 Build ID: 20170518000419 Update Channel: release User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:53.0) Gecko/20100101 Firefox/53.0 OS: Windows_NT 10.0 Multiprocess Windows: 0/1 (Disabled by add-ons) Safe Mode: false

Crash Reports for the Last 3 Days

All Crash Reports

Extensions

Name: Adblock Plus Version: 2.9 Enabled: true ID: {d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d}

Name: Application Update Service Helper Version: 2.0 Enabled: true ID: aushelper@mozilla.org

Name: Bulk Media Downloader Version: 0.1.7 Enabled: true ID: {72b2e02b-3a71-4895-886c-fd12ebe36ba3}

Name: Disable Anti-Adblock Version: 3.1.1-signed.1-signed Enabled: true ID: {d49a148e-817e-4025-bee3-5d541376de3b}

Name: Grammarly for Firefox Version: 8.764.857 Enabled: true ID: 87677a2c52b84ad3a151a4a72f5bd3c4@jetpack

Name: Load Tab on select Version: 0.5.8.1-signed Enabled: true ID: {d3b46ca0-999d-11da-a72b-0800200c9a66}

Name: Multi-process staged rollout Version: 1.14 Enabled: true ID: e10srollout@mozilla.org

Name: Pocket Version: 1.0.5 Enabled: true ID: firefox@getpocket.com

Name: RAMBack Version: 1.0.1-signed.1-signed Enabled: true ID: ramback@pavlov.net

Name: Shield Recipe Client Version: 1.0.0 Enabled: true ID: shield-recipe-client@mozilla.org

Name: Web Compat Version: 1.0 Enabled: true ID: webcompat@mozilla.org

Name: E-Web Print Version: 1.23.00 Enabled: false ID: e-webprint@epson.com

Name: TubeCast Version: 0.3.9 Enabled: false ID: @tubecast

Name: Video DownloadHelper Version: 6.3.1 Enabled: false ID: {b9db16a4-6edc-47ec-a1f4-b86292ed211d}

Graphics

Features Compositing: Direct3D 11 Asynchronous Pan/Zoom: none WebGL Renderer: Google Inc. -- ANGLE (NVIDIA GeForce GTX 460 Direct3D11 vs_5_0 ps_5_0) WebGL2 Renderer: Google Inc. -- ANGLE (NVIDIA GeForce GTX 460 Direct3D11 vs_5_0 ps_5_0) Audio Backend: wasapi Direct2D: true DirectWrite: true (10.0.15063.0) GPU #1 Active: Yes Description: NVIDIA GeForce GTX 460 Vendor ID: 0x10de Device ID: 0x0e22 Driver Version: 21.21.13.7653 Driver Date: 12-29-2016 Drivers: C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispiwu.inf_amd64_b67dc924fff8de6d\nvd3dumx,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispiwu.inf_amd64_b67dc924fff8de6d\nvwgf2umx,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispiwu.inf_amd64_b67dc924fff8de6d\nvwgf2umx,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispiwu.inf_amd64_b67dc924fff8de6d\nvwgf2umx C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispiwu.inf_amd64_b67dc924fff8de6d\nvd3dum,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispiwu.inf_amd64_b67dc924fff8de6d\nvwgf2um,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispiwu.inf_amd64_b67dc924fff8de6d\nvwgf2um,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispiwu.inf_amd64_b67dc924fff8de6d\nvwgf2um Subsys ID: 00000000 RAM: 768

Diagnostics AzureCanvasAccelerated: 0 AzureCanvasBackend: direct2d 1.1 AzureContentBackend: direct2d 1.1 AzureFallbackCanvasBackend: skia Decision Log D3D9_COMPOSITING: disabled by default: Disabled by default GPU_PROCESS: unavailable by runtime: Multi-process mode is not enabled

Important Modified Preferences

accessibility.typeaheadfind: true browser.cache.disk.capacity: 358400 browser.cache.disk.filesystem_reported: 1 browser.cache.disk.smart_size.first_run: false browser.cache.frecency_experiment: 1 browser.download.importedFromSqlite: true browser.places.smartBookmarksVersion: 8 browser.sessionstore.upgradeBackup.latestBuildID: 20170518000419 browser.startup.homepage: about:home browser.startup.homepage_override.buildID: 20170518000419 browser.startup.homepage_override.mstone: 53.0.3 browser.tabs.remote.autostart.2: true browser.tabs.warnOnClose: false browser.urlbar.suggest.searches: true dom.push.userAgentID: c233a1b64cec4804b842282d066aac9c extensions.lastAppVersion: 53.0.3 gfx.crash-guard.d3d11layers.appVersion: 53.0.3 gfx.crash-guard.d3d11layers.deviceID: 0x0e22 gfx.crash-guard.d3d11layers.driverVersion: 21.21.13.7653 gfx.crash-guard.d3d11layers.feature-d2d: true gfx.crash-guard.d3d11layers.feature-d3d11: true gfx.crash-guard.status.d3d11layers: 2 gfx.crash-guard.status.d3d11video: 2 media.benchmark.vp9.fps: 192 media.benchmark.vp9.versioncheck: 2 media.gmp-gmpopenh264.abi: x86-msvc-x64 media.gmp-gmpopenh264.lastUpdate: 1495656208 media.gmp-gmpopenh264.version: 1.6 media.gmp-manager.buildID: 20170518000419 media.gmp-manager.lastCheck: 1495770074 media.gmp-widevinecdm.abi: x86-msvc-x64 media.gmp-widevinecdm.lastUpdate: 1495656213 media.gmp-widevinecdm.version: 1.4.8.903 media.gmp.storage.version.observed: 1 media.hardware-video-decoding.failed: false media.webrtc.debug.log_file: C:\Users\Naheem\AppData\Local\Temp\WebRTC.log network.cookie.prefsMigrated: true network.predictor.cleaned-up: true places.database.lastMaintenance: 1495656995 places.history.expiration.transient_current_max_pages: 123570 plugin.disable_full_page_plugin_for_types: application/pdf privacy.donottrackheader.enabled: true security.sandbox.content.tempDirSuffix: {805f0ce1-60e5-4ed5-b5b1-a3171b49a6bb} services.sync.declinedEngines: services.sync.engine.adblockplus: true services.sync.engine.prefs.modified: false services.sync.lastPing: 1495751510 services.sync.lastSync: Fri May 26 2017 20:56:07 GMT+0100 (GMT Standard Time) services.sync.numClients: 3 storage.vacuum.last.index: 1 storage.vacuum.last.places.sqlite: 1495656994 ui.osk.debug.keyboardDisplayReason: IKPOS: Touch screen not found.

Important Locked Preferences

Places Database

JavaScript

Incremental GC: true

Accessibility

Activated: false Prevent Accessibility: 0

Library Versions

NSPR Expected minimum version: 4.13.1 Version in use: 4.13.1

NSS Expected minimum version: 3.29.5 Version in use: 3.29.5

NSSSMIME Expected minimum version: 3.29.5 Version in use: 3.29.5

NSSSSL Expected minimum version: 3.29.5 Version in use: 3.29.5

NSSUTIL Expected minimum version: 3.29.5 Version in use: 3.29.5

Experimental Features

Sandbox

Content Process Sandbox Level: 1

Start your Computer in safe mode. Then start Firefox. Try Safe websites. Is the problem still there?

http://encyclopedia2.thefreedictionary.com/Linux+Safe+Mode Starting Any Computer In Safe Mode; Free Online Encyclopedia

My computer is a fresh install window that's not the problem