Assetto Corsa (2014) is one of the most popular racing games on Steam. It has received official content updates as recently as 2017, and continues to be developed in 2019 by a loyal and active modding community who have taken full advantage of Assetto Corsa’s open software architecture.
So how does it run on AMDs Pitcairn silicon in 2019? Very well actually, though getting the best visuals and performance out of this title requires a little work - namely the installation of Content Manager & Custom Shader Patch (CSP). With CSP you can enjoy Radeon Imaging Sharpening (CAS) on any GPU! Screen tearing is noticeable in this title, but was easily dealt with by flicking on Enhanced Sync without any apparent increase in input lag.
Core i5 3570K (stock clocks)
2x4GB DDR3-1600 9-9-8-23-1
R9 270 2GB @ 925/1375 MHz (with custom timings good for ~+5% fps increase over stock)
Radeon Software Version 19.7.1 - an important trick is to force AF through the driver control panel - it looks much better than the in game. I forced 16x AF.
Windows 7 64 bit
Assetto Corsa v1.16.3 (steam version)
Custom Shader Patch (preview 245)
Additionally i recommend the following optimisations (under general patch settings):
"Flatten nodes" ON
"Optimise draw order" ON
"Optimise meshes some more" ON
Under graphics adjustments enable "Use FidelityFX CAS by AMD for extra sharpness"
Under these conditions, the in-game benchmark returns the following result:
AC VERSION: 1.16.3 (x64)
FPS: AVG=64 MIN=50 MAX=98 VARIANCE=3 CPU=56%
LOADING TIME: 18s
GPU: AMD Radeon (TM) R9 200 Series (1920x1080)
OS-Version: 6.1.7601 (Service Pack 1) 0x300-0x1
CPU CORES: 4
AA:4X AF:0X SHDW:2048 BLUR:0
WORLD DETAIL: 5 SMOKE:4
PP: QLT:4 HDR:1 FXAA:1 GLR:4 DOF:4 RAYS:1 HEAT:1
Out of interest, I also tested the sensitivity of Assetto Corsa to VRAM speed/bandwidth – the results are plotted below and compared to some other applications. Assetto Corsa is more bandwidth hungry than Farcry 3, but not so much as a high detail Heaven Benchmark run. The GPU clock in these tests was the stock 925 MHz.