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When I recently upgraded to Mac OS Golden Gate on my MacBook Air (with M1 processor), everything became VERY slow and glitchy. Very akin to days of Dial Up. Apple tech support stated this is an issue with Mozilla Firefox.

Please reach out and provide solutions. I have already cleared cookies and data from Firefox with very little benefit.

Please provide clear steps I can follow as I do not have a strong tech background.

Thank you

Summary While Gemini Deep Research was researching a topic and building a PDF report, Firefox's memory and CPU use shot up and the whole laptop became sluggish. System RAM reached 12 of 13 GB. It came back to normal on its own after the report finished.

What I did 1. Opened gemini.google.com in Firefox. 2. Asked Gemini to research a topic and create a PDF (Deep Research). 3. While the report was being generated, the system slowed down badly.

What I measured - Firefox held about **2.6 GB of GPU (GTT) memory**, which comes out of system RAM on an integrated GPU, and it ran at about **100% CPU**. - Total GPU GTT memory in use reached **5.3 to 6.7 GB**, while normal process memory (RSS) added up to only about 5.4 GB. - System RAM reached about **12 of 13 GB in use**, and the system started swapping. - After the report finished, GTT use dropped to about **0.2 GB** and free RAM went back to about 3.8 GB. - Measured from `/sys/class/drm/card1/device/mem_info_gtt_used` and `drm-memory-gtt` in `/proc/<pid>/fdinfo`.

System - Laptop: Lenovo V15 G4 ABP - CPU/GPU: AMD Ryzen 7 7730U with integrated Radeon graphics (2 GB reserved as VRAM, 16 GB RAM in total) - OS: Ubuntu 26.04.1 LTS, kernel 7.0.0-43, GNOME 50.1 on Wayland - Browser: Firefox 159.0.1 (Flatpak)

Questions 1. Is this expected for Deep Research, or is it a known issue? 2. Is there a setting or workaround (for example turning off hardware acceleration, or switching away from the tab while it generates) that reduces memory use? 3. Has anyone seen the same thing in Chrome, or on other integrated GPUs?

Thanks!

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Recently I observed Firefox is consuming TOO MUCH of RAM on my PC. It is anywhere between 55 % & 65%. That’s too much! I’ve 12 GB of RAM.

Is this due to updating of FF? Btw, I did not install any Extensions. And if I close Firefox the RAM consumption comes down to around 33%.

I do have 12-14 open Tabs but I always had those open Tabs. Previously FF did not consume so much of memory. What could be the reasons for this heavy RAM consumption?

My browser is using 2,3 Gb of extra ram it goes away by restarting but comes back in 5-10 min. It occurs wathing twich, i have tried disabling extentsions but it doesn't work. in about:memory the readout is as thoug it is keaping an extra copy of open browser files in ram.

2,511.83 MB (100.0%) -- heap ├──2,301.00 MB (91.61%) -- committed │ ├──2,016.65 MB (80.29%) ── unused-pages/dirty │ ├────230.75 MB (09.19%) ── allocated │ ├─────32.96 MB (01.31%) ++ bin-unused │ └─────20.65 MB (00.82%) ++ (2 tiny) └────210.82 MB (08.39%) -- decommitted

    ├──210.21 MB (08.37%) ── unmapped
    └────0.61 MB (00.02%) ++ unused-pages

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Other browsers work just fine.

Anyone else experiencing this?

Thanks!

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I tried to summary this in the following image.