Forge using a lot of resources for one of my players

[kakaroto]

Make sure you are using the same software version, same system version and the same list of modules enabled between your local Foundry and your Forge game.
I can guarantee you that the Forge itself wouldn’t have anything to do with it, and it’s most likely an issue with one of the modules you’re using.
I recommend checking this tutorial for some help :

Trouble with Modules

Introduction More often than not, if Foundry VTT (on The Forge, or elsewhere) is running slowly, it is usually the fault of module issues (whether a module issue by itself, a module conflicting with another, etc.). This article is intended to give you the tools to find issues with the modules you use so that you can go about running your games, and not worry about fighting the software. Performing a Module Audit First, confirm that there is a module issue by enabling safe configuration for t…

I hope that helps.