Low GPU/CPU utilization and very unstable FPS

Running a 4080 with a 13700K and getting like 20-80 frames, usually around 40-60 with gpu utilization being anywhere near 20-40%, occasionally spiking to around 70 but never above 90. CPU utilization remains at 20%. I have 10 GB allocated and I'm using the modpack BMC4.
25 Replies
vanirra_
vanirra_OP2d ago
Nothing I’ve tried in the faq post works
Puhpine
Puhpine23h ago
How much ram did you allocate to Minecraft?
Miki_P98
Miki_P9821h ago
Is at least one of the CPU cores working at 100%? What other performance mods do you have?
vanirra_
vanirra_OP13h ago
10gb Tried optifine and oculus There are more that come with the better mc modpack but I’m not sure which ones Also disabling distant horizons generation in the menu does absolutely nothing for performance Forgot to mention it makes my singeplayer worlds extremely laggy even when I turn generation/rendering off
Miki_P98
Miki_P9813h ago
Is at least one of the CPU cores working at 100%? Optifine is a performance improving mod, but Oculus is just a shader loader, and shaders decrease the performance if active Though if Oculus was working you also had to have Embeddium or Sodium, and those are performance mods even better then Optifine
vanirra_
vanirra_OP13h ago
I’ll have to check later but if not what should I do?
Miki_P98
Miki_P9813h ago
If not, IDK If it is that would suggest a CPU bottleneck, more presicesly single core performance bottleneck
vanirra_
vanirra_OP13h ago
I play a lot of intensive games and I never have as many issues as I do with mc
Miki_P98
Miki_P9813h ago
Is the performance normal if DH is the only mod? Or DH + Embeddium + Oculus for a working performant shader base
vanirra_
vanirra_OP13h ago
Now that I think about it, it might be one of the newer versions of dh messing with my performance I used to run dh on the same modpack a few months ago and everything was fine
Miki_P98
Miki_P9813h ago
MC beats all as the base game is so terribly optimised that it can't even use what you have Then came performance mods that are so greatly optimised that they squeeze every single bit out of your PC components and Windows is not tuned for this neither as such situations are rare outside of server environments
vanirra_
vanirra_OP13h ago
I’m also using windows 11 which isn’t helping afaik
Miki_P98
Miki_P9813h ago
What is the average in-game memory usage? How often does it just up and down? How low it goes when it jumps down? How much RAM do you have in your PC?
vanirra_
vanirra_OP13h ago
1. Around 6gb 2. Not often at all 3. 5gb 4. 32gb
Miki_P98
Miki_P9813h ago
What MC and DH versions? Also that wasn't the answer to the question
vanirra_
vanirra_OP12h ago
1.20.1 forge and 2.3.0 I have not tried having dh as the only mod Gonna try using a non beta version of DH Unless they’re all beta
Miki_P98
Miki_P9812h ago
There is: - Beta - Alpha Each of them have: - Stable (from Modrinth) - Nightly (from #links-n-downloads)
vanirra_
vanirra_OP12h ago
Downgraded and I’m getting significantly better performance Thanks for the help
Miki_P98
Miki_P9812h ago
To what version? Also have you tried updating to 2.3.2? Or nightly 2.3.3? Maybe it is only 2.3.0 that was broken?
vanirra_
vanirra_OP8h ago
i had 2.3.2 before, i downgraded to 2.2.1 have not tried the nightly versions tried nightly version same performance issue only 1 of my 16 cores is being 100% used cpu utilization stays at around 20-30% not much of my vram is being used
Miki_P98
Miki_P988h ago
Does the usage patter differ much between nightly and DH 2.2.1? Can you send SS of both usage graphs (per core view)?
vanirra_
vanirra_OP8h ago
nightly version uses my cpu a lot more than 2.3.2 struggling to get screenshots but only 1 core is being consistently used while others are just spiking for nightly for 2.32. all of my cores are being used but none at 100% my gpu usage never goes above 50% as long as dh is downloaded regardless of if its enabled or not
vanirra_
vanirra_OP8h ago
2.3.2 but with cpu usage set to max

Did you find this page helpful?