I'm mixing my own since shortly after I began vaping in late 2013.
You don't need to subohm for high vg juice but you need an atomizer that provides big enough juice supply paths. They don't need to be ridiculously big though, I can vape my 80VG/20PG juice in a kayfun prime.
Your nauti coils might have a too narrow passage in the coil head for high vg to work.
Juice can be made more liquid-ish by either using water instead of part of or all of the pg or by adding a small amount of vodka.
You don't need to subohm for high vg juice but you need an atomizer that provides big enough juice supply paths. They don't need to be ridiculously big though, I can vape my 80VG/20PG juice in a kayfun prime.
Your nauti coils might have a too narrow passage in the coil head for high vg to work.
Juice can be made more liquid-ish by either using water instead of part of or all of the pg or by adding a small amount of vodka.