Hi!

In a dop network, what is the difference between using a multisolver node and merging solvers together?

I don't think the setup on the right is a valid set up, it should give you an error
since the output of popsolver3 is not a solver (solvers are purple), but an object, since its already attached to popobject2

you use multisolver when you want to attach multiple solvers to a single dop object
but you can also merge multiple solvers especially microsolvers and then attach to an object