[Shadow of the Tomb Raider] fossilize eats all RAM until it OOMs

The symptoms here seem to be the same as #84 but that one was fixed and closed, so I was asked to file a new issue.

In the last month or two, I've noticed that fossilize seems happy to consume all system memory without bounds, and this is particularly evident with Shadow of the Tomb Raider (native Linux version), which consistently sees fossilize gobble up all the memory and then eventually get OOM killed and you have to kick it by turning background processing off and on again. It does eventually complete because it doesn't start from zero each time, but it makes the system unusable for anything else until it finally completes. I've been preemptively turning background processing off and on while watching the memory usage to get it to complete a bit faster, but that's no fun.

I suspect that the behaviour here is not unique to SotTW - it's just that this seems to have enough work to do that it can saturate my system.

System Details:

• CPU: Core i9-12900K
• Memory: 64GB (no swap)
• GPU: Nvidia 515.48.07
• OS: Ubuntu 22.04 with 5.18.4 mainline kernel
• Steam Client: Beta 2022-06-18 00:17:34 1655513879

Thanks.

No source file, test, or entry point is named. Reproduce fossilize background processing with Shadow of the Tomb Raider while monitoring memory, and compare the behavior with the fix referenced in issue #84. Done means processing completes without exhausting system memory or requiring background processing to be toggled.