the.com/vsync
the bouncer that stops your gpu from serving frames faster than your monitor can drink them.
means a setting that syncs your graphics card's frame output to your monitor's refresh rate to prevent screen tearing.
from born from crt-era broadcast timing, where vertical blanking intervals marked when a monitor's electron beam reset to the top; vsync just waits for that reset before drawing the next frame.
tearing causegpu draws mid-refresh, splitting frame in two halves
tradeofffixes tearing but can add input lag
triple bufferinginvented to dodge vsync's lag penalty
modern fixg-sync and freesync sync the monitor to the gpu instead
for instance
nvidia g-sync monitors — launched 2013 to make vsync's compromise obsolete
console gaming pre-2010s — locked vsync on to hide weaker hardware's frame drops