Question My system has the reccomended specs, but game is still very laggy

Mar 5, 2022
Hey guys, I have a video game (factorio) with the following recommended specs:

OS: macOS Catalina, Mojave, High Sierra, Sierra, OSX El Capitan, Yosemite
Processor: Quad core 3GHz+
Memory: 8 GB RAM
Graphics: 2015 Mac with dedicated GPU with 2 GB VRAM.
Storage: 3 GB available space
Additional Notes: High sprite resolution, High quality compression

I am currently operating on a:
OS: Montery
Processor: 2.6 GHz 6-Core Intel Core i7 processor
Memory: 16 GB 2667 MHz DDR4
Graphics: Intel UHD Graphics 630 1536 MB
Storage: 163GB available

When I start out my save, normally, for the first few minutes, all is smooth, but then the frame starts dropping and soon my game is almost unplayable, with very few frames a second (about 5-10). Any ideas why?