hi graphicz, a ram usage of 130mb is low to normal and won't cause any slow downs. a constant cpu usage isn't normal on the other hand - i think, i have seen another trend micro user with this issue recently, so please go to the firefox menu ≡ > addons > extensions panel, try to disable the "Trend Micro BEP" entry and see if firefox is still slow after a restart then...

Tanks Phil I have disabled Trend Micro BEP and in fact the ONLY addon I now have is FireBug. Still get a whirring fan and cpu usage towards 20% and 260MB memory as before. See image. I am replying in Edge so cannot add the troubleshooting so it is attached as a pdf

any difference when you install the amd beta drivers for your graphics hardware?: http://support.amd.com/de-de/download/desktop/legacy?product=legacy3&os=Windows+10+-+64

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300Mb 56% memory!!!!!!

Downloading drivers as above

Thanks Philipp

The drivers seemed to have been the problem and it appears now to be fixed. Strange as they are both relatively new PCs with new AMD (not just the built in) graphics cards which were installed with all the driver software that came with them!

Best wishes

Jonathan

graphicz said

300Mb 56% memory!!!!!!

Have you got only 1Gb of RAM on these relatively new PCs ? That is not much by current standards, especially as your video graphics will probably take some of that. Admittedly Firefox optimistically suggests it only needs 1/2 GB

• mozilla.org/firefox/48.0.2/system-requirements/
• https://www.microsoft.com/en-gb/windows/windows-10-specifications#sysreqs

Whereas Windows 10 is saying 1GB if it is an upgrade but 2GB on a new machine. I do not think I would upgrade to Windows 10 if I only had 1GB.

Dunno where you got that from! The 300Mb is the CPU memory that FF is using, the percentage is CPU usage as stated perviously.

I think I have 16 Gigs on each machine - I've lost count

Just wanted to say 'Thank You' to philipp once again.

You completely sorted me out. Hope the thread helps someone else with Firefox issues with an AMD Radeon graphics card.

Best wishes

thanks for the feedback & i hope you can enjoy your firefox again now :))

philipp said

thanks for the feedback & i hope you can enjoy your firefox again now :))

Well no actually. Even with the legacy drivers and acceleration and 3d disabled and still cpu fan whirring and FF usage up to 18+%

This is hopeless - I depend on Firebug

Application Basics

Name: Firefox Version: 48.0.2 Build ID: 20160823121617 Update Channel: release User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:48.0) Gecko/20100101 Firefox/48.0 OS: Windows_NT 10.0 x86 Multiprocess Windows: 1/1 (Enabled by default) Safe Mode: false

Crash Reports for the Last 3 Days

All Crash Reports

Extensions

Name: Firefox Hello Beta Version: 1.4.4 Enabled: true ID: [email protected]

Name: Firefox Hotfix Version: 20160826.01 Enabled: true ID: [email protected]

Name: Multi-process staged rollout Version: 1.2 Enabled: true ID: [email protected]

Name: Pocket Version: 1.0.4 Enabled: true ID: [email protected]

Name: Trend Micro BEP Firefox Extension Version: 9.1.0.1089 Enabled: false ID: [email protected]

Name: Trend Micro Osprey Firefox Extension Version: 2.0.0.1083 Enabled: false ID: {BBB77B49-9FF4-4d5c-8FE2-92B1D6CD696C}

Name: Trend Micro Toolbar Version: 9.0.0.1256 Enabled: false ID: {22181a4d-af90-4ca3-a569-faed9118d6bc}

Graphics

Features Compositing: Basic Asynchronous Pan/Zoom: wheel input enabled WebGL Renderer: Google Inc. -- ANGLE (AMD Radeon HD 5450 Direct3D9Ex vs_3_0 ps_3_0) Hardware H264 Decoding: No; Hardware video decoding disabled or blacklisted DirectWrite: false (10.0.10586.589) GPU #1 Active: Yes Description: AMD Radeon HD 5450 Vendor ID: 0x1002 Device ID: 0x68f9 Driver Version: 15.301.1901.0 Driver Date: 2-26-2016 Drivers: aticfx64 aticfx64 aticfx64 amdxc64 aticfx32 aticfx32 aticfx32 amdxc32 atiumd64 atidxx64 atidxx64 atiumdag atidxx32 atidxx32 atiumdva atiumd6a atitmm64 Subsys ID: 04b31043 RAM: 1024

Diagnostics AzureCanvasAccelerated: 0 AzureCanvasBackend: skia AzureContentBackend: cairo AzureFallbackCanvasBackend: cairo

Important Modified Preferences

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Important Locked Preferences

JavaScript

Incremental GC: true

Accessibility

Activated: false Prevent Accessibility: 0

Library Versions

NSPR Expected minimum version: 4.12 Version in use: 4.12

NSS Expected minimum version: 3.24 Basic ECC Version in use: 3.24 Basic ECC

NSSSMIME Expected minimum version: 3.24 Basic ECC Version in use: 3.24 Basic ECC

NSSSSL Expected minimum version: 3.24 Basic ECC Version in use: 3.24 Basic ECC

NSSUTIL Expected minimum version: 3.24 Version in use: 3.24

Experimental Features

FF 18+% CPU in safe mode!