[.NET 4.0] Gecko/JavaScript "memory leak"

[FattyXP]

I'm currently working on a bot for Neverwinter that uses the gateway to do professions, but I've run into an issue where Gecko just keeps getting larger and larger. After making sure I have no leaks in my own code, I've looked into about:memory.

Here is the about:memory dump:

Main Process

Explicit Allocations
494.12 MB (100.0%) -- explicit
├──451.86 MB (91.45%) -- window-objects
│  ├──451.85 MB (91.45%) -- top(about:memory, id=1)/active
│  │  ├──451.16 MB (91.31%) -- window(http://gateway.playneverwinter.com/)
│  │  │  ├──261.68 MB (52.96%) -- dom
│  │  │  │  ├──261.68 MB (52.96%) ── orphan-nodes
│  │  │  │  └────0.00 MB (00.00%) ++ (2 tiny)
│  │  │  └──189.48 MB (38.35%) -- js/compartment(http://gateway.playneverwinter.com/)
│  │  │     ├──101.61 MB (20.56%) -- string-chars
│  │  │     │  ├───91.39 MB (18.49%) ── non-huge
│  │  │     │  └───10.23 MB (02.07%) ++ huge
│  │  │     ├───63.39 MB (12.83%) -- gc-heap
│  │  │     │   ├──55.14 MB (11.16%) -- objects
│  │  │     │   │  ├──30.90 MB (06.25%) ── ordinary
│  │  │     │   │  ├──17.52 MB (03.55%) ── dense-array
│  │  │     │   │  └───6.72 MB (01.36%) ── function
│  │  │     │   ├───5.33 MB (01.08%) ++ strings
│  │  │     │   └───2.92 MB (00.59%) ++ (6 tiny)
│  │  │     ├───20.46 MB (04.14%) -- objects-extra
│  │  │     │   ├──14.87 MB (03.01%) ── elements
│  │  │     │   └───5.59 MB (01.13%) ++ (3 tiny)
│  │  │     └────4.01 MB (00.81%) ++ (7 tiny)
│  │  └────0.70 MB (00.14%) ++ window(about:memory)
│  └────0.00 MB (00.00%) ++ top(none)/detached/window(view-source:https://gateway.playneverwinter.com/#char%28%29/professions)/dom
├───16.18 MB (03.27%) -- js-non-window
│   ├───9.61 MB (01.94%) -- gc-heap
│   │   ├──8.43 MB (01.71%) ── decommitted-arenas
│   │   └──1.17 MB (00.24%) ++ (3 tiny)
│   └───6.57 MB (01.33%) ++ (2 tiny)
├───13.21 MB (02.67%) ── heap-unclassified
└───12.88 MB (02.61%) ++ (15 tiny)

Other Measurements
25 (100.0%) -- js-compartments
├──19 (76.00%) ── system
└───6 (24.00%) ── user

206.21 MB (100.0%) -- js-main-runtime
├──193.11 MB (93.64%) -- compartments
│  ├──102.33 MB (49.62%) -- string-chars
│  │  ├───92.10 MB (44.66%) ── non-huge
│  │  └───10.23 MB (04.96%) ++ huge
│  ├───65.39 MB (31.71%) -- gc-heap
│  │   ├──55.52 MB (26.92%) -- objects
│  │   │  ├──31.05 MB (15.06%) ── ordinary
│  │   │  ├──17.53 MB (08.50%) ── dense-array
│  │   │  ├───6.92 MB (03.35%) ── function
│  │   │  └───0.02 MB (00.01%) ── cross-compartment-wrapper
│  │   ├───5.71 MB (02.77%) -- strings
│  │   │   ├──4.45 MB (02.16%) ── normal
│  │   │   └──1.26 MB (00.61%) ── short
│  │   └───4.16 MB (02.02%) ++ (6 tiny)
│  ├───20.59 MB (09.99%) -- objects-extra
│  │   ├──14.88 MB (07.22%) ── elements
│  │   ├───5.05 MB (02.45%) ── slots
│  │   └───0.66 MB (00.32%) ++ (2 tiny)
│  ├────2.96 MB (01.44%) -- type-inference
│  │    ├──2.41 MB (01.17%) ── analysis-pool
│  │    └──0.56 MB (00.27%) ++ (3 tiny)
│  └────1.83 MB (00.89%) ++ (8 tiny)
├────9.61 MB (04.66%) -- gc-heap
│    ├──8.43 MB (04.09%) ── decommitted-arenas
│    └──1.17 MB (00.57%) ++ (3 tiny)
└────3.50 MB (01.70%) ── runtime

66.57 MB (100.0%) -- js-main-runtime-gc-heap-committed
├──64.53 MB (96.94%) -- used
│  ├──62.92 MB (94.52%) ── gc-things
│  ├───1.17 MB (01.76%) ── chunk-admin
│  └───0.44 MB (00.65%) ── arena-admin
└───2.04 MB (03.06%) -- unused
    ├──2.04 MB (03.06%) ── gc-things
    └──0.00 MB (00.00%) ++ (2 tiny)

0 (100.0%) -- low-memory-events
├──0 (100.0%) ── physical
└──0 (100.0%) ── virtual

261.82 MB (100.0%) -- window-objects
├──261.69 MB (99.95%) -- dom
│  ├──261.68 MB (99.95%) ── orphan-nodes
│  └────0.01 MB (00.00%) ++ (6 tiny)
└────0.13 MB (00.05%) ++ (3 tiny)

494.05 MB ── explicit
  0.40 MB ── gfx-d2d-surfacecache
  4.00 MB ── gfx-d2d-surfacevram
  3.78 MB ── gfx-d2d-vram-drawtarget
  2.11 MB ── gfx-d2d-vram-sourcesurface
  2.67 MB ── gfx-surface-image
  0.00 MB ── gfx-textures
        0 ── ghost-windows
417.86 MB ── heap-allocated
429.54 MB ── heap-committed
 11.70 MB ── heap-committed-unused
    2.80% ── heap-committed-unused-ratio
  2.00 MB ── heap-dirty
 26.13 MB ── heap-unused
  2.71 MB ── images-content-used-uncompressed
 75.00 MB ── js-gc-heap
        0 ── low-commit-space-events
560.52 MB ── private
591.84 MB ── resident
  3.21 MB ── storage-sqlite
950.25 MB ── vsize

Currently, I'm attempting to use these options to limit Gecko, it reduces the amount of memory it seems to consume per round of rewards/job starts, but it doesn't seem to be of much use in preventing half a gig of memory from being consumed. Currently, the program seems to have stalled out at about 450mb of memory consumption with these options. (where before it seemed like it would just keep on getting larger)

            GeckoPreferences.User.Item("browser.cache.memory.enable") = False
            GeckoPreferences.User.Item("browser.cache.disk.enable") = False
            GeckoPreferences.User.Item("browser.cache.check doc frequency") = 3
            GeckoPreferences.User.Item("browser.cache.offline.enable") = False
            GeckoPreferences.User.Item("javascript.options.mem.max") = 50000
            GeckoPreferences.User.Item("javascript.options.mem.gc_frequency") = 5
            GeckoPreferences.User.Item("image.mem.min_discard_timeout_ms") = 5000 ' 5 seconds, then discard.
            GeckoPreferences.User.Item("browser.sessionhistory.max_total_viewers") = 0

Is there any way i can force Gecko to consume less memory? or does the problem lie in badly coded JavaScript on their end?

[FattyXP]

Side note: after leaving the program open with about:memory open(no tabs)... the program has since dropped down to 60mb of usage.