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The original was posted on /r/steamdeck by /u/Nookiezilla on 2025-06-15 21:21:19+00:00.
I've had my Steam Deck for about a week, and it's honestly driving me crazy.
Every day, when I turn it on in the evening (I shut it down completely every morning), Steam starts downloading shader cache updates for almost all of my games. This happens daily, even for older games that haven't been updated at all. There's no game update, no system update, nothing that would explain it.
The worst part is how slow these downloads are, around 5 Mbit/s (regular downloads are much faster) so I end up waiting a long time before I can play. For example, Overwatch 2 consistently gets a shader cache update of around 2.1 to 2.3 GB, and just that alone takes almost an hour to download. And this happens every single day.
I'm not using a microSD card, either. I'm running everything from the Deck's original internal 1 TB SSD, so it shouldn't be a slow storage issue either.
I understand what shader pre-caching is for, but this behavior just seems broken. It feels like Steam or the Deck keeps resetting or invalidating the cache constantly for no reason.
Has anyone else experienced this? Is there a fix? I'm seriously considering disabling shader pre-caching just to stop this nonsense.
https://preview.redd.it/oq35q2rar57f1.jpg?width=4032&format=pjpg&auto=webp&s=9478b83eabd81c51a1274657378d784d07455fc1
