[T6 - Zombies] Consistent unreplictable crash on Tranzit

[JadssDev]

What happened?

After playing Tranzit, could be for 2 minutes or 1 hour... moving through the fog at some point, causes the game to hang or straight up crash.
I have not managed to find out why BO2 crashes... I have tried for wayy too long to replicate this bug, or find a way to replicate it but I can't.. I have found ways to make it happen, but it's inconsistent what action actually causes it.

Expected result

The game should never hang, stop rendering frames or straight up CRASH.

Steps to reproduce

1. Launch Bo2 zombies;
2. Join a server or solo ( I tried both and in both cases I managed to get my game to just perish and (hang or crash) ) on Tranzit;
3. Play a few rounds, and ESPECIALLY run around the map... (My game always hanged/crashed within the fog of the map)
4. The game should crash...

• (On my solo run to replicate this bug, to check if it wasn't just a server issue, I crashed at round 24 after 1 hour of playtime, but it shouldn't take long to crash if you're running around the map at a high round while killing zombies)

Affected game(s)

BO2 Zombies (T6ZM)

Affected component(s)

Client (game)

Plutonium version

r5334

Relevant logs

console_zm.log
(Round 24, Solo Tranzit) (yes these logs are full, I know there's a cut at the end, but that's what was written to it before it hanged..)

Additional information

I have the crash dump for the Round 24 Solo Tranzit stored, it's a 2gigabyte dump I took with taskmgr, might be useful or not.. but I have it.
I do not have a crash dump because the game never created one... I either crash with a COM Error DXGI_ERROR_DEVICE_REMOVED or it just hangs, it never created a "real" crash dump..

Operating system

Windows 11 24H2

Plutonium profile

https://forum.plutonium.pw/user/jadss

Discord username

jadsss

[ineedbots]

This issue is a vanilla game issue, most likely tied to the gump fastfiles loading and unloading at runtime. My best theory is that the shaders inside these fastfiles are loading and unloading, which is causing some kind of race condition inside of the graphics driver.

https://steamcommunity.com/app/212910/discussions/0/864951657833462884

You can see here that ever since the game's release, people have been encountering the issue.

[JadssDev]

Well I am unsure this bug happened previously... interestingly I always crashed on the fog, in 3 particular spots (lava patch in farm, the walkway down from bridge to bus depot and lava patch in town..
I don't know if there is a potential fix for this, or if this can be associated to some assumptions the Devs made about the player's setup, especially that I do run a quite odd resolution (2560x1080 21:9) or monitor count.

I also haven't tried, but will probably try and come back here if later rounds have an impact, (so test if moving around Tranzit at round 1 can cause the crash or it is something that only happens on later rounds)

Eager to hear your response.

[JadssDev]

Hey, I tried crashing my game by repeatedly loading and unloading "gump fastfiles", and my game did crash 99% of the time while doing it... I guess I'll be waiting for more tests or information you can possibly give me.
Thanks for your fast response, until later!

[JadssDev]

Hey @ineedbots ,
After a lot of testing, I found out that RTSS (RivaTuner Statistics Server) causes the crash, specifically if there is a cap of FPS set.
I also tried messing with "Reduce Engine Sleeps" but that did not result in anything meaningful.

Specifically I set the FPS cap to 30, did a few loads by changing my zone and it crashed quite quickly. Removed the cap and it stopped crashing.