Game runs perfectly fine and then all a sudden the performance just tanks for no reason. How has it been a year and a half and there are still issues like this.
Because probably it was never forwarded to Support for "a year and a half", and even if it was, with such a tone, any dev-team will just leave you to it.
Just make a calm chill report to Support with as much details as you can give. Tell 'em your system specs, graphics settings, what other apps were running, how long was your system running, how long after the game started the tanking starts, what were you doing when it started, where in the city was it, during which gig, does it start every time at the same place.
That kind of details Support can use to pinpoint the cause. Can use the link below. Just choose what counts for you until you stumble on a tap that says, "Contact us".
Technical Support — CD PROJEKT RED
Welcome to CD PROJEKT RED Technical Support! Here you will find help regarding our games and services, as well as answers to frequently asked questions.
support.cdprojektred.com
And remember, the first detail they'll take into consideration is your tone; If they don't like it, they'll leave you to it. Be chill.
Has it been an issue before 1.5? I've only seen it given attention on these forums since then. Others have reported it to CDPR and been advised that they are aware and looking into it.
it has been an issue since day one of the game being released.