It seems strange that the game has to optimize shaders at every boot. And no this is not just on a driver/game update. I can literally boot up, see optimizing shaders. See it complete at 100%. Exit out of game, open it back up, and it will start optimizing again right away. Verified it did this three times in a row this morning.

The latest patch is supposed to limit how often it does this, but they still haven't turned it off.

What's weird is before it launched on GOG, it only cached shaders on a new install or driver update. I'm not sure why they changed it to streaming caching.

You'll find you're able to load into the game immediately, but you might find stuttering. Guerilla doesn't always do things the way you'd expect them to.

Actually, it IS a game update. I forget which one but the original PC launch took an hour or so to optimize shaders and never did so again... then they changed it to "fix" problems some people were having. Revert to an older version of the game and you'll only need to optimize once.

Just upgraded computer a few days ago and noticed that on my old computer with GTX 970m, optimizing shaders occurs every time the game starts. On newer computer with GTX 1660 Super, optimizing shaders happened one time, and I haven't seen it happen again yet. So seems like the behavior is dependent on the computer configuration.

It used to be per driver update, now its every time you boot, i wish they fixed it.

Doesn't optimize shaders on every boot for every computer on the latest GOG build. Mine is lucky enough to avoid that issue. Though when I updated my video drivers I needed to wait through the whole optimizing shaders routine, as expected.

Some people in the steam forums found running the game in Administrator mode fixed it for them, though I don't need to do that with mine so it may just be a lucky work around that works for some.

Currently using a 2060 Super and the Vulkan Beta Driver 457.67 with the Nvidia experience NOT installed. Virtual RAM is set to 24576 MB, My Antivirus is set to keep my games folders as exceptions (Had it delete save files on me in the past).

Oh and while I can't use it due to being on an old Win 10 build (1909), if you have the latest Win 10 build apparently enabling "Hardware Accelerated GPU Scheduling" can help with if one is having issues with game stability.

Maybe this will help someone with this annoying issue....

It still runs this every time I load the game up but after 2-3 times of it taking 10 minutes each, it now probably takes half of that time.