GPU fails to downclock

[trudnorx]

Is there an existing issue for this?

• I have searched the existing issues

Is your issue described in the documentation?

• I have read the documentation

Is your issue present in the nightly release?

• This issue is present in the nightly release

Describe the Bug

The GPU Sunshine is running on fails to downclock sufficiently while a client is connected to the stream. It becomes energy inefficient, and causes much more heat and power usage than necessary. This is even when GPU usage (including VID usage) by the stream is extremely low so low clocks would be able to perform just fine. You can't just relax and leave the stream on in the background because of the reasons I mentioned, plus the fan staying on at a high setting as a consequence.

I am not 100% sure what causes it, but I hypothesize it's related to the feature implemented by #1308. The pull request noted that this feature intentionally keeps the clocks high. While it's understandable that some users prefer this feature because of the claimed latency improvements, others prefer for the GPU to be able to downclock as much as possible.

I fail to see any option to toggle it on/off. It should be made an option. And given these issues, it probably shouldn't be the default.

Expected Behavior

No response

Additional Context

No response

Host Operating System

Windows

Operating System Version

any

Architecture

64 bit

Sunshine commit or version

Latest

Package

Windows - installer

GPU Type

Nvidia

GPU Model

GPU Driver/Mesa Version

Capture Method (Linux Only)

No response

Config

-

Apps

No response

Relevant log output

-

[Kishi85]

Seeing the same behaviour when latest Sunshine is running, the power draw of my RTX4070 doubles as clock is stuck at maximum and stays constant at that rate even when just idling on the desktop. As already noted this seems to be related to the "Prefer maximum power" profile Sunshine sets up for itself to improve latency.

This should be made into a config option to give the user the choice of being able to save power by accepting (the possibility) of increased latency. The default can stay as it is now but please give us the option of toggling that setting.

[ReenigneArcher]

I'll accept a PR to make this configurable if anyone wants to work on it.

[cgutman]

#1798 makes it configurable. I can address the comments there if @ns6089 is busy.

[ReenigneArcher]

@cgutman that's fine with me. This issue has come up more than a few times.