Why is my GPU usage so low at 20% when playing 1.18.2 Minecraft with shaders?

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Why is my GPU usage so low at 20% when playing 1.18.2 Minecraft with shaders?

Why is my GPU usage so low at 20% when playing 1.18.2 Minecraft with shaders?

A

austinp44
Member

73

11-20-2025, 04:04 PM

#1

System Specifications
I9-11900k
RTX 3080 ti
32gb RAM at 3600mhz
I've been attempting to resolve this problem with Minecraft for three days, but it only uses 20%–35% of the GPU while shaders are active. Using the Nvidia control panel with my dedicated GPU didn't trigger power limiting—it's happening specifically in Minecraft. I've tried Rainbow Six Siege, Fortnite, and Warzone; they all reach full usage. I've removed Minecraft and Java, then performed a factory reset, but the issue persists at 20%–35% GPU consumption.

A

austinp44

11-20-2025, 04:04 PM #1

System Specifications
I9-11900k
RTX 3080 ti
32gb RAM at 3600mhz
I've been attempting to resolve this problem with Minecraft for three days, but it only uses 20%–35% of the GPU while shaders are active. Using the Nvidia control panel with my dedicated GPU didn't trigger power limiting—it's happening specifically in Minecraft. I've tried Rainbow Six Siege, Fortnite, and Warzone; they all reach full usage. I've removed Minecraft and Java, then performed a factory reset, but the issue persists at 20%–35% GPU consumption.

A

adityad
Member

128

11-20-2025, 04:04 PM

#2

Which shaders are used? Are they third-party? Which Minecraft version are you playing? Is it the Java version or Microsoft's Windows edition? Have you looked at your CPU usage and clock speeds? What are your GPU temperatures?

A

adityad

11-20-2025, 04:04 PM #2

Which shaders are used? Are they third-party? Which Minecraft version are you playing? Is it the Java version or Microsoft's Windows edition? Have you looked at your CPU usage and clock speeds? What are your GPU temperatures?

H

hunter20522
Junior Member

5

11-20-2025, 04:04 PM

#3

Sidlers Extreme
Seus Renovado
Complemento
Optifine Built In
Mesmo com os shaders Optifine integrados, mantenho 100 fps em áreas boas, mas apenas 60 com outros shaders
Java Edition
Meu monitor é 1080p e 165hz

H

hunter20522

11-20-2025, 04:04 PM #3

Sidlers Extreme
Seus Renovado
Complemento
Optifine Built In
Mesmo com os shaders Optifine integrados, mantenho 100 fps em áreas boas, mas apenas 60 com outros shaders
Java Edition
Meu monitor é 1080p e 165hz

N

NooLele
Posting Freak

847

11-20-2025, 04:04 PM

#4

The GPU operates at approximately 60 degrees Celsius during high usage.

N

NooLele

11-20-2025, 04:04 PM #4

The GPU operates at approximately 60 degrees Celsius during high usage.

_

_Alphaaa_
Junior Member

10

11-20-2025, 04:04 PM

#5

Ahhhh I see. Seuss is heavily CPU dependent. It's ray tracers are it's home brew and it does not use NVIDIA's tracers. Thus you are waiting on your CPU. To get RT with minecraft, there is a special version for it.
(But I will admit I love Seuss and the various resource packs)

_

_Alphaaa_

11-20-2025, 04:04 PM #5

Ahhhh I see. Seuss is heavily CPU dependent. It's ray tracers are it's home brew and it does not use NVIDIA's tracers. Thus you are waiting on your CPU. To get RT with minecraft, there is a special version for it.
(But I will admit I love Seuss and the various resource packs)

N

NuDimon
Member

77

11-20-2025, 04:04 PM

#6

It seems my benchmarking shader pack was effective, but the CPU usage stays around 20% to 30%. I've experimented with various Java versions and OptiFine settings, yet the GPU remains at 20% to 35% and the CPU at 20% to 30%. It feels like Java or Minecraft is restricting my PC's performance, and I've been stuck for four days now.

N

NuDimon

11-20-2025, 04:04 PM #6

It seems my benchmarking shader pack was effective, but the CPU usage stays around 20% to 30%. I've experimented with various Java versions and OptiFine settings, yet the GPU remains at 20% to 35% and the CPU at 20% to 30%. It feels like Java or Minecraft is restricting my PC's performance, and I've been stuck for four days now.

C

CrazyColin20
Member

65

11-20-2025, 04:04 PM

#7

It's Java and using OpenGL. This approach isn't ideal for handling threads like this. Begin running the Task Manager and divide the CPU usage into separate logical parts. You'll notice some components are heavily loaded while others remain idle.

C

CrazyColin20

11-20-2025, 04:04 PM #7

It's Java and using OpenGL. This approach isn't ideal for handling threads like this. Begin running the Task Manager and divide the CPU usage into separate logical parts. You'll notice some components are heavily loaded while others remain idle.