Godot Version
4.2.2
Question
Im trying to make this infection type enemy that spawns other enemies to infect the map, if i have the gridmap to check for a specific area3d would there be performance issues?
Try it and see.
Also, where a script is attached has nothing to do with performance.
Really bad for me personally, may its my celeron but the fps is REALLY BAD
Im using area3ds on the meshes so i can detect the virus entity, is there another way to use this without sacrifing performance?
Like a mesh manager or something?
We do not have nearly enough information to make such a decision for you. If you try it and run the profiler, and share your findings plus scripts, then we may be able to help more.
As general advice use basic shapes for your Area3D collision shape child, assign the layers and masks to different values so your many areas do not waste time detecting each other.