Is ReShade allowed in multiplayer?

Unfortunately, we cannot comment on the legality of third-party tools, as we aren't able to thoroughly and accurately check exactly how they work.

In general, we do not encourage the creation or use of third-party tools because they provide advantages for players that use them. I'm afraid that we're unable to guarantee if a tool is allowed or would remain allowed in the future.

I would recommend refraining from creating or using any programs that automates or does more than one action with a keystroke or mouse click as well as anything that interacts with the game client to provide an advantage over other players or provide information that isn't normally visible.