But it works fine in for example Forza Horizon 5 if you play with G-Sync and V-Sync on. It depends what game you play it seems.
I remember shortly after G-Sync became a thing, in the driver you could only activate G-Sync or V-Sync, it worked perfectly fine If I only activated G-Sync back then. But after some Nvidia driver updates then there suddenly was the option to also activate V-Sync combined with G-Sync. And I noticed if I didn’t activate V-Sync then I would get tearing if I reached the max FPS my refreshrate would allow. But that didn’t happen before that update. Since then I always had both active, because I didn’t get tearing, stuttering or anything. I only noticed this behaviour in FM7 and FM23 so far. But back then while I played FM7 on my regular 60 HZ 2160p TV I didn’t notice the problem, because it didn’t have G-Sync. I only played games like Battlefield 3 and 4 and such on my G-Sync monitor and everything else on my regular non G-Sync TV in higher res. I bought one of the first G-Sync monitors that was on the market back then, it’s an ACER XB270H (bought in 2016, in 2015 G-Sync monitor technology hit the market iirc) and it still works fine to this day. Yeah back then this just worked a little different. I first needed to know that I have to turn off V-Sync in certain games to avoid stuttering. It’s a problem that it doesn’t happen in every game, the stuttering I mean. Else I would have figured out the problem years ago.