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Firefox 45.0 is running very slow and lagging. Using too much RAM Windows 10

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  • 1 has this problem
  • Last reply by FredMcD

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Firefox 45.0 very slow startup and running very slow and lagging. It uses too much RAM Windows 10. Current Laptop Specs 250 GB SSD 8 GB Intel I5 Processor. Uninstalled Firefox completely and Install Firefox from beginning still no fix only have 3 add-on and only one add on is running.

Main Process

WARNING: the following values are negative or unreasonably large.

   explicit/(18 tiny)
   explicit/(18 tiny)/heap-unclassified 

This indicates a defect in one or more memory reporters. The invalid values are highlighted. Explicit Allocations

338.28 MB (100.0%) -- explicit ├──4,097.53 MB (1211.30%) -- gfx [?!] │ ├──4,096.00 MB (1210.85%) ── heap-textures [?!]

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Start Firefox in Safe Mode {web Link} by holding down the <Shift>
key, and then starting Firefox. Is the problem still there?

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

Starting The Computer In Safe Mode;
Free Online Encyclopedia

Firefox uses too much memory (RAM) - How to fix This article describes how to make Firefox use less memory to make it run faster and prevent crashes.