B42 Memory leak | Project Zomboid | Page 1

earnest eagle Apr 6, 2026, 4:34 AM

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Since updating to B42.16.1, I've been experiencing a severe memory leak that wasn't present in previous versions.

After playing for a while, VRAM usage climbs to 97% (3.8/3.9 GB) and RAM usage reaches 98% (around 13-14 GB out of 15.8 GB), eventually causing the game to freeze or crash.

Hardware:

CPU: AMD Ryzen 5 5600G
GPU: RX 550 4GB VRAM
RAM: 16GB
OS: Windows 11
Version: 42.16.1

This did not happen in previous builds. The memory usage keeps climbing over time and never gets released. Playing on a multiplayer server with mods.

Screenshot attached showing 97% VRAM and 98% RAM usage.

visual plinth Apr 6, 2026, 7:13 AM

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prob a not updated mod

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42.16 broke alot of mods

earnest eagle Apr 6, 2026, 1:04 PM

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visual plinth prob a not updated mod

No, that's not it. My friends are the ones hosting and they were able to get in, but I also noticed that unlike build 42.15, this 42.16 consumes much more RAM and VRAM.

earnest eagle Apr 6, 2026, 2:49 PM

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I'm attaching the console.txt file in case it helps. The crash and the increase in RAM usage occur after selecting the character and spawn point during the loading screen

📎 console.txt

bleak grotto Apr 6, 2026, 3:20 PM

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Are you able to reproduce the issue without any mods?

earnest eagle Apr 6, 2026, 5:05 PM

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bleak grotto Are you able to reproduce the issue without any mods?

Without mods, this doesn't happen, but the strange thing is that it only happens in this version, while in b42.15 it worked perfectly with the same mods, and my friends can log in with those mods. However, the host noticed high VRAM and RAM usage.

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I don't know if you can see it, but my VRAM usage reached 11GB.

bleak grotto Apr 6, 2026, 5:35 PM

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earnest eagle Without mods, this doesn't happen, but the strange thing is that it only happens...

I can only suggest reporting the leak to the mod developers in that case.

earnest eagle Apr 7, 2026, 7:14 PM

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Thanks 😄

untold thorn Apr 15, 2026, 12:05 PM

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lol i have this same exact issue with 32gb of ram. if i run no mods, i get no resource bloat. when i toggle some mods on, instant bloat. i haven't noticed the issue with my gpu, but the ram usage is very immediately noticeable.

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i have less than 70 mods active and pz is using 16gb of ram. fwiw i had over 300 on b41 and at least over a hundred on previous versions of b42 with zero resource issues.

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getting out of memory crashes when i reload save files

#B42 Memory leak