Firefox unusable

System Manufacturer/Model Number: Dell Inspiron 546
OS: Windows 7 Professional
CPU: 2.70gigahertz AMD Athlon 7750 Dual-Core
Motherboard: Dell, Inc. 0F896N A02
Memory: 3328 Megabytes Usable Installed Memory
Graphics Card: ATI Radcon HD 3200 Graphics
Monitor(s) Displays: Dell E1709W 17,2" monitor
Hard Drives: 309.54G usable hard drive capacity 161.25G hard drive free space Seagate FreeAgent Go 500G external drive Seagate FreeAgent Go 160G external drive Maxtor One Touch 250G external drive

Computer Type: PC/Desktop
System Manufacturer/Model Number: ChillBlast - Custom to my design
OS: Windows 11 Pro x64 [Latest Release and Release Preview]
CPU: Ryzen 9 5950X, 3.8 - 5.2 MHz
Motherboard: Asus Prime X570-Pro
Memory: 64GB [2 x 32GB] DDR4 3200MHz
Graphics Card: 4GB NVIDIA GEFORCE GTX 1650 Ti
Sound Card: On-board SPDIF to 5.1 System + HDMI [5.1 system]
Monitor(s) Displays: 32" UHD 32 Bit HDR Monitor + 43" UHD 4K 32Bit HDR TV
Screen Resolution: 2 x 3840 x 2160 @60Hz
Keyboard: Logitech Wireless MX Keys & K400 + others
Mouse: Logitech Wireless MX Master 3S
PSU: NZXT C750 80 PLUS Gold 750W Modular PSU
Case: Workstation Case [Matt Black]
Cooling: NZXT Kraken X63 280mm CPU Cooler +2x Quiet Case fans
Hard Drives: 1TB M2 SSD OS, 500GB Fast Access SSD, 2 x 8TB Data + Various Externals from 1TB to 4TB, 10TB NAS
Internet Speed: 920 MB Down 50 MB Up
Browser: Chrome (always run latest Non-Beta)
Antivirus: BitDefender Total Security Pro
Other Info: Also run ... Laptop - Quad 8GB - Windows 10 Pro x64 Nexus 7 Android tablet x2 Samsung 10.2" tablet Blackview TAB 8 4G Android Tablet c/w Keyboard Wacom Intuos Pro Medium Pen Pad Wacom Intuos Pro Small Pen Pad Wacom Expresskeys Remote Loopdeck+ Graphics Controller Shuttle Pro v2 Control

Computer Type: Laptop
System Manufacturer/Model Number: Dell XPS 17 10750H
OS: Windows 11 Pro x64 Latest RP
CPU: Intel I7 10750H 5.0GHz
Motherboard: Dell XPS
Memory: 32GB [2x16GB] DDR4 2933 MHz
Graphics Card: nVidia GTX1650Ti 4 GB GDDR6
Sound Card: Stock [Realtek] 4 Speaker
Monitor(s) Displays: 17" IPS UHD+ Infinity Edge Touchscreen
Screen Resolution: 3840 x 2400
Keyboard: Backlit + Various Logitech
Mouse: Stock Track Pad + Logitech MX Trackball
PSU: Stock
Case: Stock XPS Aluminium & Carbon Fibre
Cooling: Stock - Active Fan Control
Hard Drives: 2TB M2 NVMe, 4TB External + various 500GB & 1TB External NVMe (also have access to spinner HDD from
Internet Speed: 72 MB Down 18MB Up
Browser: Chrome
Other Info: Also run ... Laptop - Quad 8GB - Windows 10 Pro x64 Nexus 7 Android tablet x2 10.2" tablet Sony Z3 Android Smartphone Wacom Intuos Pro Medium Pen Pad Wacom Intuos Pro Small Pen Pad Wacom Expresskeys Remote Loopdeck+ Graphics Controller Shuttle Pro v2 Control Pad 10TB NAS