AMD RDNA4 drivers hint at FSR Multi Frame Gen up to 8x

Fresh digging in AMD's driver stack has turned up evidence that FSR Multi Frame Generation — capable of ratios well above the current 2x — is heading to RDNA4 cards, with the multiplier apparently going as high as 8x. The find comes from a user on the Chinese forum Chiphell, who spotted the hidden settings inside the RadeonTuner tool, a third-party app that hooks into the official AMD driver and can surface options the standard Adrenalin software doesn't yet expose.

The FSR ratio drop-down reportedly lists multipliers up to 8x, which would actually beat Nvidia's own Multi Frame Gen implementation — that one tops out at 6x. This isn't the first breadcrumb: earlier this year, AMD's ADLX API documentation already mentioned "frame generation ratios" in a way that suggested developers were being given access to values above 2x. What's new here is that the setting appears to be baked into the actual shipping drivers rather than just sitting in SDK docs, which suggests real progress toward a public release. The same RadeonTuner session also revealed apparent overrides for FSR Ray Regeneration and Neural Radiance Caching, which could let users force ray reconstruction and neural caching in games that don't officially support them.

AMD has been playing catch-up on frame generation since Nvidia launched DLSS 3 with its Frame Generation feature back in 2022. RDNA4 cards like the RX 9070 XT launched earlier this year with AMD's ML-powered "Redstone" frame gen and upscaling, but multi frame gen — the ability to generate more than one synthetic frame per real rendered frame — has so far remained an Nvidia exclusive in practice. AMD has made some ground recently by enabling driver-level overrides that bring newer FSR tech to older GPUs, but MFG support in a meaningful number of games is still limited.

The big open question is whether 8x will be usable in practice. Even on Nvidia hardware, high multipliers introduce noticeable latency that makes fast-paced games feel sluggish, and not every player will tolerate that trade-off. No official announcement from AMD has accompanied these driver findings, so a release timeline remains unknown — but the evidence is piling up that MFG for RDNA4 is closer than it was.