Demon's Souls [BLUS30443] :- Performance regression from 0.0.9-10279 #8051 onwards

[solarmystic]

Quick summary

In game performance, when measured by average FPS, 1% FPS, and 0.1% FPS has gone down since 0.0.9-10279 #8051 .

In addition, frame times have also deteriorated to the point where the game hitches more often compared to the last good build which was 0.0.9-10275 #8110 . These hitches result in a very uneven gameplay experience compared to the last good build.

Details

Using MSI Afterburner's FPS capture tool, I measured the Average FPS, 1% FPS and 0.1% FPS of each build from 0.0.9-10275 onward in this particular scene as is shown in the screenshot below, standing still with no activity to ensure consistent results.

The first build to exhibit a noticeable and significant reduction in frame rate and frame time performance is 0.0.9-10279:-

The average framerate being 68 FPS, 1% FPS is 22 and 0.1% FPS is 17 FPS

The last good build with great average, 1% and 0.1 FPS plus a more consistent frame time graph is 0.0.9-10275:-

The average framerate being 75 FPS, 1% FPS is 36 and 0.1% FPS is 30 FPS.

I have, in addition tested many other builds until the present (as of this report) 0.0.10-10313.

The 0.0.9-10285 #8114 PR which is supposed to fix performance regressions for the TSX path doesn't fix this issue.

The results are in the table below:-

Log files:-

0.0.9-10275 (last good build)
RPCS3.log.gz

0.0.9-10279 (first bad build)
RPCS3.log.gz

System Specifications:-

Intel i7 7700 @ 4.0 GHz
NVIDIA GTX 1070Ti with 442.59 drivers
32 GB DDR4 2400 MHz
Windows 7 SP1 Pro

[AniLeo]

Waiting issue completion

[solarmystic]

Waiting issue completion

Apologies for the premature post, I have fully completed the issue report now.

[elad335]

Test with #8137 please.

[solarmystic]

Test with #8137 please.

Something is wrong with appveyor, when i try to go there for the experimental build, it gives the "Project not found or access denied." message on the page instead.

[elad335]

We do not use appveyor anymore.

[RainbowCookie32]

AppVeyor is no longer being used for RPCS3, we moved to Azure Pipelines

[solarmystic]

AppVeyor is no longer being used for RPCS3, we moved to Azure Pipelines

Thanks for the guidance. #8137 has been tested and shown to fix this issue.