The bug
My game takes over 30 seconds to reach the loading screen, and I just recently figured out the cause: packs in the development_behavior_packs and development_resource_packs folders. The more files you have in the pack, the slower launching the game becomes.
It doesn't even matter if they are legal pack files or not, so it's not parsing or validation that's slow. In fact it doesn't even matter if the folder is a valid pack β removing the manifest file doesn't prevent the stall.
Note that the normal behavior_packs and resource_packs folders don't appear to have this issue, however using them is not an option for me because closing and reopening Minecraft entirely in order to reload changes is a non-starter.
How to reproduce
1. Download the attached behavior pack. It has 66,000 extremely small files in it
2. Unzip it in the development_behavior_packs folder
3. Launch the game
Expected behavior
It launches in under 2 seconds with a modern PC
Actual behavior
You're staring at a gray screen for multiple minutes
Linked issues
is duplicated by 1
Attachments
Comments 7
It is. I've attached a video demonstrating my launch times when following the provided steps. I hope it helps. It takes Bedrock nearly four minutes to launch under these conditions. With my computer's specs, I expect the game to fully launch in under two seconds. Java Minecraft takes around three.
Thank you for your report!
However, this issue has been temporarily closed as Awaiting Response.
Could you please specify the location of the development_behavior_packs folder?
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%localappdata%\Packages\Microsoft.MinecraftUWP_8wekyb3d8bbwe\LocalState\games\com.mojang\development_behavior_packsHere are some comparisons I timed of using packs in the development_resource_packs folder:
Loading Time | Number of Packs in Folder | Total Size of Packs in Folder | Total Number of Files in Folder |
|---|---|---|---|
20.74 seconds | 0 | 0 MB | 0 |
21.46 seconds | 1 | 1.29 MB | 361 |
46.86 seconds | 2 | 50.3 MB | 7590 |
50.62 seconds | 3 | 224 MB | 8335 |
80.99 seconds | 4 | 453 MB | 16921 |
Methodology:
Configure development_resource_packs folder as specified in the table above.
Restart computer.
Log in.
Select Minecraft Bedrock icon and start a timer. The above tests were performed on 1.21.21.
Once the start screen is visible, stop the timer.
Assume a Β±1 second margin of error as I was not perfect on the timer.
The loading time is most correlated with the Total Number of Files in Folder as the original report says:
Total # of Packs:
Total File Size of Packs:
Total # of Files:
Resolving temporarily asΒ Awaiting Response. Is this still an issue in the latest version of the game (1.20.1)?
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