So I recently got my Switch and have been trying this game out with my pro controller but couldn't figure out how to do down throws, it worked fine with my joycons(attached to a grip and unattached) but it didn't seem to work with my pro con. Now I've done some research and it seems to be impossible to do on the pro con but I'd like to ask the most knowledgeable if there isn't some workaround to this as homing downwards does work.

So I've recently decided to try and speedrun SMB1, and started using the emulator Nestopia because it was recommended by a video I watched(can't exactly remember). In anyway it worked and works fine for the most part, that is in windowed mode. When I try and enter fullscreen with Vsync and Triple Buffering off I get unbearable screen tearing with no input delay and when I turn Vsync(and Triple Buffering) on the tearing goes away but I get unbearable input delay. Is there anything I can do to fix this as playing in fullscreen just feels a lot nicer and more like a real NES.