There are some issues - but fundamentally, it works.
It’s not perfect, there are issues, but fundamentally it works.
On Nvidia cards, at least.
That’s down to the nature of the mod, which comes in two parts.
Load up a game and the DLSS 3 frame generation option is no longer greyed out.
However, toggling the option on activates the FSR 3 mod, not the original DLSS 3.
There are interesting side effects to this.
Officially, FSR 3 only works with FSR 2 inputs.
By and large, frame generation works fine too.
The remaining ten percent includes issues such as how HUD elements are handled by the frame generation algorithm.
Native FSR 3 frame generation implementations have multiple options for developers to choose from to reduce artefacts.
An easy solution is simply to run UI elements only on non-interpolated frames, effectively halving their update rate.
The frame-rate uplift delivered by the mod is real.
Interestingly, because DLSS frame-gen is hijacked here, Nvidia’s Reflex works for latency mitigation purposes.
This also works to keep frame-rates within your display within its VRR window for latency savings.
I wanted to note a couple of things here.
First of all, people may perceive frame-time variations very differently and that’s fine.
Secondly, not every area of the game shows this behaviour.
We use RTSS for its FCAT border support, included to verify actual frame-times delivered to your screen.
Another question was whether the erratic frame-times were limited to Nvidia cards only, working fine on AMD.
Our testing on an RX 7900 XTX revealed the same behaviour.
Reading up on user reports, some people report issues with smoothness and others do not.
One particular problem is shadow reprojection, where shadows exhibit a flashing double image that presents almost like stutter.
The big takeaway is that camera motion and translation in general looks better.
It’s also just a matter of time until these DLSS 3 mods extend to AMD hardware too.
