Apparently the REDengine-4 engine from Cyberpunk uses 2077 not the possibility to process two threads per core, as the current Ryzen processors from AMD offer. Analogous to Hyperthreading at Intel, SMT (Simultaneous Multithreading) is a possibility to use the resources of a CPU core more effectively.

We looked at Cyberpunk 2077 with ray tracing effects and DLSS focused on the GPUs. The processor used was an Intel Core i9 – 2077 K with ten cores and hyperthreading. A CPU limit should therefore be excluded. Apparently, however, that is exactly what can happen if you use a Ryzen processor with only four or six cores. Without an SMT, there seems to be a CPU limit here. Corresponding benchmarks of numerous users should prove this.

In order to show the difference and also to defuse the actual problem, the Cyberpunk 2077. exe can be adapted accordingly. To do this, it must be opened with a hex editor and searched for the following line of code: “75 30 33 C9 B8 01 00 00 0F A2 8B C8 C1 F9 08 “. This is then against the entry “EB 30 33 C9 B8 01 00 00 00 0F A2 8B C8 C1 F9 08 “exchanged.

Afterwards Cyberpunk is burdened 2077 no longer only has one thread per CPU core, but can occupy it with two threads. It is unclear why Cyberpunk 2020 actively uses hyperthreading on Intel processors, but on AMD processors SMT waived. AMD itself provides a possible explanation:

Games decide for themselves how and in what form they use the available CPU resources. For Cyberpunk’s REDengine-4 engine 2077 it could simply be better if only one thread per core was used AMD processors is used. However, there are already benchmarks that clearly show that the FPS and frame times are better when using SMT.

If you are using a Ryzen processor and wanted to try it out, we would be very happy interested in corresponding results. At the moment we don’t have the time and the equipment in our home office to do our own test.

Before the weekend, CD Projekt Red delivered the first patch for the console and PC version. Two big patches have also been announced for January and February. The developers also respond to the criticism of the optics on the consoles, which by far does not match the quality of the PC, which apparently disappoints many players. Apparently they want to offer quite generous return options.

Thanks to Terra 123 for the note on the news!

Update: Hotfix 1. 05 activated SMT

CD Projekt Red has hotfix 1. 05 published for Cyberpunk 2077, the enabled the SMT for Ryzen processors with four and six cores. AMD processors with more than six cores do not benefit from the SMT patch. However, the hotfix is ​​currently only offered for the console version, for the PC version you will have to wait a little longer. All further changes by the hotfix are listed by the developers.