Unzip the patch and execute it by selecting the original exe of the sourcenext version of re3, then proceed with the patching.
a patch created for the VX HD mod but which works with any sourcenext version mod.
It allows the client to run at any resolution while the desktop resolution it's always the Fullscreen resolution.
It also allows for the models to be upscaled alongside the resolution.
Ps.: for links for the full RE3 vX HD mod check the summary description.