I don’t have the game, but maybe it ships older dlss dll or uses some shit preset? I usually just replace the game dll with latest one from TPU (https://www.techpowerup.com/download/nvidia-dlss-dll/) and slap an env var to force transformer model DXVK_NVAPI_DRS_NGX_DLSS_SR_OVERRIDE_RENDER_PRESET_SELECTION=RENDER_PRESET_K (as per: https://github.com/jp7677/dxvk-nvapi/wiki/Passing-driver-settings) (EDIT: render_preset_latest could work too, but last I heard K was latest, and the “newer ones” aren’t actually used yet, dunno of render_preset_latest actually uses those or K)

seems to work in the games I play, but, YMMV.

edit: might need DXVK_NVAPI_DRS_NGX_DLSS_SR_OVERRIDE=on as well.