Artifacts introduced with RTGI update

So ever since they introduced RTGI in update 15 (which looks incredible), I’ve noticed some pretty severe artifacting has appeared since then.

Specifically it’s with red lights trailing from the taillights (braking or no braking doesn’t make a difference). And also a whiteish silhouette of the rear of the car, right behind the car.

I’ve also notice it tends to be most visible when it it dawn/dusk in the game. At high noon or night time it’s not very apparent.

But here’s where it gets weird. The red trailing lights artifacting is ONLY visible when RTGI is enabled (low, med, high RTGI settings doesn’t make a difference). But the white silhouette is visible regardless or not if RTGI is on.

It seems to happen regardless of car or track as well. I’ve tried rebooting my PC, updating drivers, etc etc, and I’m running on a 4080 w/ a 13900k. So specs aren’t the issue either.

I’ll attach some pictures below for reference. The 928 is on Yas Marina during the C Class Open Series campaign, and the M3 is on Watkins Glen in the B Class Open Series campaign.

I circled the white silhouettes on the 928 to help point it out for the first 2 pics. And in the 3 pics in my reply show the taillight trailing.


these are normal DLSS artifacts. turn off DLSS and it will go away.

See that’s the thing. DLSS is off. I’m aware of it being an issue with DLSS, and have had it off since day one. I’ve even tried turning it on and off again to see if that would fix it. It didn’t.

To make to even weirder, if I turn RTGI off but turn DLSS on, it’s not there. But as soon as I turn RTGI back on, it shows back up. Regardless of whether or not DLSS is on or off (which I keep it off either way).

That’s how I’ve narrowed it down to being an RTGI issue. Because as soon as RTGI goes off, it goes away, and as soon as RTGI is on, it comes back. Regardless of any other combination of on/off settings for the rest.

I have this issue as well. Can confirm it’s the RTGI (happen on all low/med/high setting)

Glad I’m not the only one. So at least that shows it’s a new bug, rather than my hardware suddenly giving up hahaha.

What are your specs/set up? Might help find a common denominator if there is one…

I’m on 4070 / i5-11400 with in-game setting high/ultra except RTAO & RTGI at medium. (1440p)

I have this exact issue. Any resolution yet?