I created a new fresh world, and right after i died (few mins in game, and within the spawn chunk too), it started to lag extremely, and the lag stayed.
Before I died, the game run very smooth, just untill i died it went off the scale.
And It appeared to gotten worse after following deaths.
Possibly related: Mobs started turning invisible after the respawning, and framedrop.
EDIT: Game output, attached as requested.
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migrated
migrated
It happened me too. This bug also occur when creating new world.
kumasasa
After having this issue: Please attach the complete output of the "Game Output (Your Minecraft name) " which can be found on the fourth tab of the launcher to this ticket.
If the launcher closes after game start, please edit your profile and select "Launcher visibility" then, "Keep the launcher open".
migrated
Ive added the gameoutput.
kumasasa
Nothing to see in the logfile.
Let's try something different: Again after / while having the issue force a crash by pressing F3 + C for 10 seconds while in-game and attach the crash report ([minecraft/crash-reports/crash-<DATE>-client.txt|http://hopper.minecraft.net/help/finding-minecraft-data-folder]) to this ticket.
migrated
It's very strange, this time the frames got locked at around 20 fps, where as before it went up again, but still unstable.
I did kill myself by kill command, from a visual distance from the worldspawn.
EDIT:
After a few tests, I noticed the fps go as low as 1-9 and then slowly up to around 20, while respawning after death.
And especially while respawning a few seconds in between each death.
The game really struggles to catch up, which never happened to me before with my specs in any game.
Note: Attached crashreport.
kumasasa
You're running out of memory:
Memory: 776994408 bytes (740 MB) / 1060372480 bytes (1011 MB) up to 1060372480 bytes (1011 MB)
To increase, see MC-12949
migrated
Sure, but that Fix states its because of Resource packs, which I am not using.
Also, the game should run with more memory by default in that case right?
The world was loaded once, and only maybe one chunk.
Also on 1.8.3, this world load incredibly stable, with the same conditions and situation.
With also the same memory usage.
kumasasa
migrated
No, the memory usage is steady at around 20%, while the framrate situation persists, even after reloading the world, the memory usage stays the same.
However, for the first time Minecraft crashed and froze my computer for a moment, while alt-tabbing.
This hasnt been the case in any snapshots before, and also didnt ever occur since the 1.8 versions.
Few notes:
Before 1.8 the game kept crashing like it did just now (video driver crash, no memory noticable memory issues in 1.8 though).
It's the typical Nvidia bug, where the video driver crashes. (I do hope this doesnt come back in 1.9, for 1.8 was finally stable 😉).Also, when i alt tab in minecraft, my fans starts speeding up very high instantly.
I will add the log of the crash: "Minecraft_15w37a_GameOutput_NvidiaCrash.txt"