Instead of directly adding a node to the outputs list, do this.
1. Connect an "fx" node to all the ports you want to output. Takes a millisecond to build, an practically no memory footprint.
2. Set all these FX nodes to output instead. Now rename all the fx nodes appropriately, that's your output file name now.
A bit more hassle, but it's basically an output node. You can also individually set your file types for your masks now. And you can add some bias gain within that fx node as a post effect. To clean up your graph, use "portals" for your output ports and do the fx nodes using those portals in a new graph tab, that way it'll "sane-ify" your noodle soup of a graph a bit lol!