Delete my docs / rockstar games / gtav / settings.xml - try again.
(make sure it isn't readonly, hidden, or can try to manually edit it yourself)
Others may need to rename my docs / rockstar games.
(I wouldn't use cloudsave here either - use local, rule out bad saves)
Others may need to update/reinstall gpu drivers.
Others used geforce experience to optmize settings.
Of course - if any exist - remove mods. (uninstalling/reinstalling game does not do this)
They need manual removal. Uninstall/reinstall is 'ok' - IF - you delete leftover files.
Much easier to clean the folder -- or bareminimum - delete dinput8.dll from gtav folder if it exists -.-

Verifying game files is fine.
Reinstalling is a complete waste of time if it just 'broke' after changing settings.

Those were the 'recent' basics. -.-
Not everyone falls into 'recent' fix catagory, and which even includes doing/not doing things properly/correctly. And then.....

The above list of 'recent' things is NOT the only things that can do this. There are plenty of other things to cause problems at that point but the above is based on what you said. N/KN version of windows missing media feature packs /s, problems with R* launcher/social club (uninstall/reinstall them), usb devices, background programs (cleanboot windows via msconfig), overlays, av/sec/windows defender /whitelist /exclusxions), admin, perms, onedrive, directx issues, no audio device /smh, and on and on it goes. If you haven't played for weeks/months before 'now' there are so many potential reasons depending on pc setup.

If there's other issues/errors - my profile, post hist, or steam group is slathered with info.
my docs / rockstar games / launcher / launcher.log is full of lots of useful info you can try to parse yourself... or use pastebin.com to copy/paste it all and dump a link here.

/goodluck /dinnertime

There is always https://support.rockstargames.com/ otherwise.

Old link - https://gtm.steamproxy.vip/app/271590/discussions/0/3490879839968282087/#c3490879839968290951