The same issue
M4 MacBook Air (15")
16 GB
Tahoe 26.1 (but the same with 26.0 and Sequoia)
10-core CPU (4 performance and 6 efficiency)
10-core GPU
2880x1864 Retina
Using in-built display
Windowed and fullscreen
Game version: 1.119.109.1220
Premise: on the first clean start, an error message says that the graphics card is not recognised in their database, and the resolution is automatically set to 2560x1600. However, the problems persist both with this and when I set other resolutions.
The frame rate is more or less stable at around 60 fps in private lots and between 50 and 60 in community lots or private lots with many sims. Fps are halved when a screen is turned on (TV, computer or karaoke) and increase again as soon as screens are turned off or removed from build mode.
Obviously, in a private lot the problem is "limited" (unless your sim is a writer or developer), but in community lots it is almost impossible to have smooth gameplay.
Without screens there are still occasional frame drops, but the game remains much more playable.
Premise: on the first clean start, an error message says that the graphics card is not recognised in their database, and the resolution is automatically set to 2560x1600. However, the problems persist both with this and when I set other resolutions.
Just ignore this. It's because the GraphicsCards.sgr file only includes the M1 chip, EA have yet to update with M2, M3, M4, etc. You can manually add it yourself but it has no bearing on game performance as you can easily changes settings in game options and in the GraphicsRules.sgr file.
