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Uncontroled memory leak causes crash/system freeze on connect survives full OS reinstall ignores MaxMem launch parameter

0

State

Done
Issue key
DZG-295
Access
Public
Space
DayZ
Project
Stable Feedback
Creator
yoy_du_310
Created
Aug 11, 2026
Views
99
Platform
PC Steam
What happened?

I launched DayZ and connected to an official server. Shortly after connecting, DayZ_x64.exe memory usage climbs uncontrollably (21-23 GB RAM observed in Task Manager), causing either a crash with nothing written to the script_/RPT logs, or in more severe cases the entire system freezes and Windows shows a low-memory warning. Not tied to one specific server — reproduced on multiple different official servers.

System: Ryzen 5 5600X, AMD RX 6900 XT (16GB), 32GB RAM, Windows 11 25H2 (fresh install). Other demanding games (Battlefield 6, Forza Horizon 6) run perfectly stable on the same hardware.

Reproduction steps

1. Launch DayZ (Launcher or Run DayZ Client).

2. Connect to an official server.

3. Memory usage climbs rapidly - Task Manager shows 21,000-23,000 MB used by DayZ_x64.exe within a short time.

4. Game crashes or the entire system freezes.

Already tried, issue persists through all of it:

- Full Windows reinstall + full DayZ file wipe and reinstall

- AMD Adrenalin drivers freshly installed

- Radeon Anti-Lag and Image Sharpening disabled

- All overlays disabled (AMD, Steam)

- Page file set to fixed size (16-32GB)

- BattlEye service verified working

- No Display/TDR events in Event Viewer at time of crash

- No Kernel-Power Event 41 at time of freeze

- Steam Cloud disabled for DayZ

- Verified game file integrity via Steam

- Deleted Documents\DayZ to force a fresh profile

- Launched with -MaxMem=6144 to cap engine memory - ignored, usage still climbed past 21GB

Exact build version (optional)
1.29.163451
Where did it happen?
Official
Is it modded?
No
Expected result

Connect to the server normally with stable memory usage, like other equally demanding games (Battlefield 6, Forza Horizon 6) on the same system.

Reactions

Activity

    2 months ago
  • yoy_du_310
    created issue2 months ago
  • l909
    Moderator
    2 months ago
    l909
    Moderator
    2 months ago

    Hello.
    Does the experimental version work by any chance? Also maxmem parameter is an obsolete parameter that will likely cause issues rather than help.

  • l909
    changed state to
    NEED MORE INFO
    2 months ago
  • yoy_du_310
    2 months ago
    yoy_du_310
    2 months ago

    Thanks for looking into this. I tested DayZ Experimental as requested — connected to an official Experimental server and memory usage stayed stable, no crash, no freeze. Completely different behavior from Stable, where the issue is fully reproducible every time.

    Also noted re: -MaxMem=6144 — thanks for clarifying it's deprecated on the current 64-bit client, that explains why it had no effect when I tested it.

  • l909
    Moderator
    2 months ago
    l909
    Moderator
    2 months ago

    Thank you, in such case, can you try the following?

    Disable Steam cloud sync
    Delete the contents of your DayZ folder in documents
    Copy contents from DayZ Exp folder in documents into the DayZ folder in documents
    Re-launch the game.

  • yoy_du_310
    2 months ago
    yoy_du_310
    2 months ago

    Confirmed fixed — copying the Documents/DayZ Exp profile over the Stable one resolved it completely. Memory usage is stable now. Thanks for the help.

  • l909
    changed state to
    DONE
    2 months ago

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State

Done
Issue key
DZG-295
Access
Public
Space
DayZ
Project
Stable Feedback
Creator
yoy_du_310
Created
Aug 11, 2026
Views
99