Does PuTTY support storing settings, so I don't have to change them every time?

PuTTY

A.2.5 Does PuTTY support storing settings, so I don't have to change them every time?

Yes, all of PuTTY's settings can be saved in named session profiles. You can also change the default settings that are used for new sessions. See section 4.1.2 in the documentation for how to do this.