The 10240 map is bigger so, if anything, it’s going to perform worse than the 6040. But I agree that the effect on frame rate (as opposed to, say, time for your friends to download it) may be negligible.
Regarding the Blood Moon count, be aware that while you have it set to 64 concurrent zombies per person, there’s a separate, overriding limit for total zombies loaded on the server at once. I believe this is also around 64 by default.
If you’re willing to take one for the team, you might run the dedicated server on your new machine with (I presume) better specs, and connect as a client to play from your old gaming laptop.
Regarding the Blood Moon count, be aware that while you have it set to 64 concurrent zombies per person, there’s a separate, overriding limit for total zombies loaded on the server at once. I believe this is also around 64 by default.
If you’re willing to take one for the team, you might run the dedicated server on your new machine with (I presume) better specs, and connect as a client to play from your old gaming laptop.