[d3d9] Sonic & Sega All-Stars Racing Transformed Collection: performs poorly when Risezable BAR is enabled

dxvkclosed d3d9

doitsujin/dxvk#3038 · opened 2022-11-08 by ranplayer · updated 2022-11-26 · 6 comments · github

Rranplayer 2022-11-08 github

This old game performs poorly (inconsistent fps, and huge drops) when Resizable BAR is enabled on the BIOS (not a DXVK bug, since it's the same for Windows). I was just wondering if there is a possible workaround on the DXVK's side. This feature does improve performance in newer games, and it would be nice to keep it enable on the system. I've tried setting RADV_PERFTEST=nosam, but no success. Is there any DXVK's property that I could try ?

Software information

Name: Sonic & Sega All-Stars Racing Transformed_Collection
SteamId: 212480

System information

GPU: RX 6700 XT 12 Gb
Driver: Mesa 22.2.2
Wine version: Proton 7.0-4 / 7.0-5 (Experimental)
DXVK version: 1.10.3 and latest changes from master

Log files

Mmisyltoad 2022-11-08 github

Perhaps try d3d9.apitraceMode

Ddoitsujin maintainer 2022-11-08 github

For context, this is usually caused by games reading from memory that's only supposed to be written to, and sadly not uncommon at all. Like Josh said, d3d9.apitraceMode = True in dxvk.conf (see https://github.com/doitsujin/dxvk/wiki/Configuration) should help.

Rranplayer 2022-11-08 github

Thanks for the explanation, folks. That property did trick ! It's running smoothly now with Resizable BAR enabled.

BBlisto91 2022-11-08 github

@ranplayer Can you test if it has the same effect when you instead add d3d9.allowDirectBufferMapping = False
Use it with proton experimental.

Rranplayer 2022-11-08 github

@Blisto91 , this property helps a little, but the apitrace mode provides a solid and consistent performance.

BBlisto91 2022-11-09 github

Just noting here that https://github.com/doitsujin/dxvk/pull/3039 might be a temporary workaround until the devs have looked into the issue more