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Far Cry 5 CrossFire / mGPU issues with R9 Nano & RX 480

Question asked by tibornyers_bc on Mar 31, 2018
Latest reply on Mar 31, 2018 by tibornyers_bc

I wanted to test how well the R9 Nano CF and the RX 480 CF scales compared to single card setup with different resolutions. The single dGPU configurations worked fine with great frame pacing.

However, mGPU setups seem to have all sort of issues.

- the frame pacing is rubbish

- at higher resolution (1080p with 1.8 and 2.0 resolution scale) the game tends to produce different artifacts from time to time - water polygon shading and house black volume

- at higher resolution (1080p with 1.8 and 2.0 resolution scale) the RX 480 x2 setup produces wonky frames next to frame borders; sometimes a shorter region is not updated and the older frame can be seen there

- at higher resolution (1080p with 1.8 and 2.0 resolution scale) the R9 Nano x2 setup blurs some frames very severely near to the camera - have a look at the tree area

 

Setup:

PSU: Cooler Master 1000W VANGUARD

MB: Gigabyte GA-AB350-Gaming 3

CPU: AMD Ryzen 5 1600 3.20GHz AM4

RAM: G.Skill FlareX F4-3200C14D-16GFX

Cooler: AMD Wraith Spire Cooler

Driver: Radeon Adrenalin 18.3.4 (17.50.33.05)

OS: Microsoft Windows 10 (10.0) Home 64-bit Version 1709

 

Nothing is OCed, everything is at stock (CPU, GPU).

Colored frame bars are overlayed with RTSS Rivatuner Statistics Server v7.0.2.

 

I have attached the log-info files from the systems. I also attached the frame time graphs of different runs.

Game settings: 1080p, Ultra, SMAA, Motion Blur on

Resolution Scale was set to 1.0, 1.2, 1.4, 1.6, 1.8, 2.0.

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