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Shader Cache is Being Downloaded and Compiled After Every Single Reboot

#### Your system information * Steam client version (build number or date): Sep 16 2021 at 00:09:09 * Distribution (e.g. Ubuntu): Arch Linux * Opted into Steam client beta?: [Yes/No] Yes * Have you checked for system updates?: [Yes/No] Yes #### Please describe your issue in as much detail as possible: Every time I launch Steam after restarting my computer, Steam re-downloads and compiles the shader cache for every game. I have "Allow background processing of Vulkan shaders" enabled, and every time I launch Steam after a reboot, I have several downloads for shader caches, and opening the Settings and going to "Shader Pre-Caching" shows that the shaders are being compiled. After they're done, if I exit Steam and re-launch it without rebooting, nothing happens, but I can reliably reproduce it by simply rebooting. Before this started a couple weeks ago, this was not an issue, and shaders would be downloaded and compiled only periodically or after an Nvidia driver update. Also, the size of the shader cache has ballooned to 15.5 GB, before it was only about 7 or 8 GB, and it consistently stayed around that size for months and months. I haven't installed any new games since then, the only thing that's changed is Doom Eternal added Ray Tracing and DLSS support. I don't think this is the same as #6299, as it's not limited to Steam Play titles, it's all games. Also, it doesn't happen every time I launch Steam, only every time I reboot. All of the updates are between 100 KB and

Posted by gardotd426 on Sep 17, 2021, 8:13 AM

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Shader Cache is Being Downloaded and Compiled After Every Single Reboot

gardotd426Sep 17, 2021, 8:13 AM

#### Your system information * Steam client version (build number or date): Sep 16 2021 at 00:09:09 * Distribution (e.g. Ubuntu): Arch Linux * Opted into Steam client beta?: [Yes/No] Yes * Have you checked for system updates?: [Yes/No] Yes #### Please describe your issue in as much detail as possible: Every time I launch Steam after restarting my computer, Steam re-downloads and compiles the shader cache for every game. I have "Allow background processing of Vulkan shaders" enabled, and every time I launch Steam after a reboot, I have several downloads for shader caches, and opening the Settings and going to "Shader Pre-Caching" shows that the shaders are being compiled. After they're done, if I exit Steam and re-launch it without rebooting, nothing happens, but I can reliably reproduce it by simply rebooting. Before this started a couple weeks ago, this was not an issue, and shaders would be downloaded and compiled only periodically or after an Nvidia driver update. Also, the size of the shader cache has ballooned to 15.5 GB, before it was only about 7 or 8 GB, and it consistently stayed around that size for months and months. I haven't installed any new games since then, the only thing that's changed is Doom Eternal added Ray Tracing and DLSS support. I don't think this is the same as #6299, as it's not limited to Steam Play titles, it's all games. Also, it doesn't happen every time I launch Steam, only every time I reboot. All of the updates are between 100 KB and

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