It was your personal conscious choice to connect a personal computer to a TV. Now suffer.
The settings you need to fix this are probably hidden deep in the submenus of your TV, not the driver, since you yourself acknowledge that it's the TV that is too smart for its own good that cannot output a proper picture.
Depending on the model and manufacturer of your TV set this might be an unfixable issue because modern marketologists think that they know better than the user and restrict access to in-depth service menus, only allowing minor on-the-surface adjustments and mode switching.