EI will send the .log files, I want to add the gpu/cpu percentages on 1.21.5 and 1.21.4:
1.21.5: GPU 55-70%, CPU 30-40%
1.21.4: GPU 39-40%, CPU 5-15%
Bsl shaders, iris, sodium, fabric, lithium, running at 180 fps, 1080p.
1.21.5: GPU 55-70%, CPU 30-40%
1.21.4: GPU 39-40%, CPU 5-15%
Bsl shaders, iris, sodium, fabric, lithium, running at 180 fps, 1080p.
EI also have spikes on 1.21.5 GPU/CPU from 30% - 50% / GPU 50% - 80%, really random
EGPU between 38 - 40% always on 1.21.4, CPU low usage between 5 - 15%, on 1.21.5 spikes GPU 50 - 80%, CPU 30 - 50%.
Everything went to low usage and perfect as it should when I rolled back to 1.21.4 with the respective mods for the version and Iris
Everything went to low usage and perfect as it should when I rolled back to 1.21.4 with the respective mods for the version and Iris
IThe “GPU Usage” meter in F3 is not actually GPU usage
Iit’s just an estimate of time the GPU took to draw the frame vs CPU, to give a rough guess of bottlenecks
Ibut FPS shouldn’t have been affected much…
Skivvi is playing a version of Minecraft released in 3 years wow /j
EMy dad works for Mojang 
EWaiting for a new update or possibly a fix for 1.21.5. Not saying it doesn’t work at all, but the performance is much better on 1.21.4.
Syou mean 1.21.5
S1.22 doesn't even have snapshots yet
EOh, sorry! Yes, let me fix the typo
IYou never sent spark logs :hmpf:
H:linus:
Itry this too
EYa, sorry school, I will send logs and try the .jar file
SScreenshots taken at stable FPS
Is it what you're looking for ?
https://spark.lucko.me/iRQFKHWoq5 (1.21.4)
https://spark.lucko.me/7WfTGFUGcE (1.21.5)
Is it what you're looking for ?
https://spark.lucko.me/iRQFKHWoq5 (1.21.4)
https://spark.lucko.me/7WfTGFUGcE (1.21.5)
SI don't know if it's from Iris or Sodium but I indeed notice a huge performance gap between both versions
IYou didn’t do /sparkc, you did /spark
II need /sparkc
SICan you try the jar I sent?
SSUpdate: even on the newest unstable release it's exactly the same as before, perf are still very bad compared to 1.21.4
I can provide a new
I can provide a new
/sparkc command result if needed
SGPU Driver version 25.3.1 btw
ISupposedly this is a problem with how Mojang does buffer uploading now(?)
II’d just say to try Linux/Mesa if you can
ESomeone told me in the mint server intel and nvidia aren’t as good as amd on Linux and Minecraft performance is not improved at all
SDoes that mean I'm basically condemned to have much lower performance than others on Iris just because I'm using AMD components? Why does it seem to be an issue only when using shaders though... (I assume it's because it's not GPU intensive with vanilla graphics?) It looks like I have no issues when I'm not using shaders
My knowledge is pretty limited at this point as it gets really specific so sorry if it seems obvious to you
Also, I don't really want to use anything other than Windows for its simplicity and universal compatibility with everything
My knowledge is pretty limited at this point as it gets really specific so sorry if it seems obvious to you
Also, I don't really want to use anything other than Windows for its simplicity and universal compatibility with everything
H:yes:
HBlame AMD for making bad drivers for Windows but good drivers for Linux.
H(says the guy who uses AMD on Windows as well)
S
SOkay but WHY is it specifically on 1.21.5 and not the previous versions
S"Supposedly this is a problem with how Mojang does buffer uploading now"
Wouldn't everyone be concerned if it was the case
Wouldn't everyone be concerned if it was the case
HMojang refactored their graphics backend significantly in this specific version, likely in preparation for Vibrant Visuals now that's announced.
SAnd also, do you personally experience the same issue as me
HI don't play Minecraft, even if I do, I only opened Minecraft to test people's issues, which I successfully failed to find the issue 3 for 3.
H:yes:
S:ioa:
SI have Smart Access Memory enabled on my computer. I'll test without but I don't see how it'd fix the issue
SSo I just tried:
- Using AMD's latest additional GPU driver update (25.3.1 -> 25.3.2) = nothing changed, still around 85 FPS on 1.21.5 vs 130 FPS on 1.21.4
- Disabling Smart Access Memory (SAM) = still nothing
- Updating my BIOS = nothing
- Updating my chipset drivers = nothing
- I'm on the latest Win 11 version
- All my other drivers are updated
SHey yall, I'm new here. I just thought I'd come in to report that I'm experiencing the exact same issue. On 1.21.4, I would be able to obtain 140 FPS on high settings with BSL shaders but in 1.21.5, I'd be lucky if I got 100 (averages 88-104 fps max) in the exact same location (same seed) but I'm using an Intel Core i7 13700K and an RTX 4070 with 32GB RAM, so I don't think the issue is entirely on solely using AMD CPUs and or GPUs. I'm using the latest drivers, newest version of Windows 11, everything's up to date.
The issue only happens with shaders enabled.
I tried Complementary with Euphoria Patches and that performs equally as bad -- in 1.21.4 in the same location of the same seed, I would get anywhere from 140-150fps and in 1.21.5 I'd be averaging in the 103-111 fps range. That's an almost 40-50 fps drop. I've tried everything in the book to fix it on my end, even adjusting the shaders so that they're on the lowest setting still grants me the same amount of FPS as it would on high settings which is the really weird part to me. Is this an issue on Mojang's end, Sodium's, Iris' (I don't think it's individual shaders; seems to affect all of them equally performance-wise) and if so, do they know of it and will they fix it?
Sorry for the long message. Thanks for yall's help in advance!
The issue only happens with shaders enabled.
I tried Complementary with Euphoria Patches and that performs equally as bad -- in 1.21.4 in the same location of the same seed, I would get anywhere from 140-150fps and in 1.21.5 I'd be averaging in the 103-111 fps range. That's an almost 40-50 fps drop. I've tried everything in the book to fix it on my end, even adjusting the shaders so that they're on the lowest setting still grants me the same amount of FPS as it would on high settings which is the really weird part to me. Is this an issue on Mojang's end, Sodium's, Iris' (I don't think it's individual shaders; seems to affect all of them equally performance-wise) and if so, do they know of it and will they fix it?
Sorry for the long message. Thanks for yall's help in advance!
SI've seen the issue happen more often on Nvidia than AMD. It's a Minecraft issue, not a Sodium nor Iris issue (you can observe the performance drop without any mods or mod loaders installed). It's being tracked on the bug tracker, no fix or ETA of one yet
