Content.ggpk corrupted after every update (game instantly closes)

After every update I get the same error. When I try to launch the game it instantly closes. The only fix I found for this is to:

1. Remove Content.ggpk
2. Redownload it
3. Do NOT start the game!
If you start it now it will instantly close, sometimes showing the GGG intro. Now the file is corrupted and even after restarting the PC you will get the "Run PackCheck.exe" message.

4. Restart PC
5. Now it works
Edit: Ok, this time it didn't work, I have already downloaded the game 3 times today. First I tried to start right from the updater, second time rebooted after starting, currently downloading the third time, not sure what to try next.

The game never works after updating without restarting, sometimes it shows the GGG intro and closes, sometimes it instantly closes after a black screen.
Maybe the updater doesn't close the file handle properly and when I try to start the game it forcefully closes it to load its content, which corrupts the file? Something must be broken with the way the updater handles the Content pak. This isn't a new issue, I've had this for almost year now and it gets really annoying to download ~30GB every few days at the start of a league.

Ok, so I looked into the logfiles and noticed a pattern:


When starting the game directly after updating the error always is:
Failed to open in file Bundles2/CachedHLSLShaders/Vulkan.bundle.bin

After restarting this becomes:
Requesting root contents 1
Got file list for "" 0
Your pack file needs to be repaired. Please run the PackCheck.exe repair tool to fix it.

When I don't start the game from the updater and reboot it is a random file missing, here is a collection (I did a complete redownload for every case):

Case 1 (first download today):
FMOD Failed to load bank FMOD/Desktop/Music15.bank with error code 13

Case 2:
Failed to open in file Bundles2/Art/Textures/Characters/Adventurer_5.bundle.bin
Failed to open in file Bundles2/Art/Textures/Characters/Adventurer_4.bundle.bin
Failed to open in file Bundles2/Art/Textures/Characters/Adventurer_3.bundle.bin

Case 3:
Failed to open in file Bundles2/Art/Microtransactions/spell/auras_1.bundle.bin
Failed to open in file Bundles2/Art/Microtransactions/Town_Portal/KrakenPortal_8.bundle.bin
Failed to open in file Bundles2/Art/Microtransactions/Aura/clarity_aura.bundle.bin
Failed to open in file Bundles2/Art/particles/environment_effects/waterfalls_2.bundle.bin

Case 4 & 7 (third download today):
Failed to open in file Bundles2/Art/2DArt/Cubemaps_21.bundle.bin

Case 5:
FMOD MISSING EVENT: event:/sound effects/skills/icecrash/lowhitsg

Case 6 (second download I did today):
FMOD Failed to load bank FMOD/Desktop/Music24.bank with error code 13
FMOD Failed to load bank FMOD/Desktop/Music4.bank with error code 13
FMOD Failed to load bank FMOD/Desktop/Music8.bank with error code 13
FMOD Failed to load bank FMOD/Desktop/Music10.bank with error code 13

If it doesn't work with the next download, I will just stop playing