NViDIA DLSS 3.7.0.0 dll
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Replace the existing nvgnx_dlss.dll in C:\Program Files (x86)\Steam\steamapps\common\TEKKEN 8\Engine\Plugins\Marketplace\DLSS\Binaries\ThirdParty\Win64
Make a backup copy of the original nvgnx_dlss.dll in case something goes wrong

Enjoy