you should generally be restarting every day regardless. things that get used less break less

make sure your graphic drivers are up to date
does this happen in every game? or is it just tf2? does the stutter occur while you're running a game or is it even happening on your desktop?
when did this issue start occurring?

windows has a "feature" called fast startup, or fast boot. I believe it's on by default, not sure. When you shut down your computer, it does not really turn off and instead just hibernates. you might want to check that you dont have that, because your CPU uptime could be hundreds of hours and messing with something (you can check that in task manager > performance > CPU)

why would you not regularly restart your computer?

i turn my computer off before bed every night like im tucking my son in to sleep

windows is so dogshit you gotta restart your pc periodically