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June 12th, 2026, 18:05 #21
On macOS 27 beta, the FG Steam launcher now wants to install Rosetta (which has been removed in this macOS version). For macOS 27, this can still be reinstalled, but macOS 28 will no longer support Rosetta next year. The FG application itself launches without problem, it's just the Steam launcher that doesn't work now. Is it possible to adapt this launcher to Silicon?
Edit: The Updater has the same problem.Last edited by Zaister; June 12th, 2026 at 18:08.
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June 12th, 2026, 18:29 #22
I can also report that FG performance on a Mac mini M4 under macOS 27 is abysmal. The load average goes up to 250+, and the whole system comes to a crawl until FG is closed. On macOS 26, FG runs very smoothly.
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June 13th, 2026, 00:38 #23
The Updater is built as a universal build for Mac and shouldn't be requiring Rosetta. There may be a legacy library used. I'll have to check on that.
I hope for the macOS 27 performance is resolved by Apple. Since it is performing well in macOS 26, it suggests that it will likely be issues we can't resolve.
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June 15th, 2026, 11:05 #24
I was not referring to the updater itself, but the wrapper script that is called from the main application to start the updater. Both these wrapper scripts require Rosetta.
I have now installed Rosetta, and this also fixes the proformance inssues I reported earlier.
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June 15th, 2026, 14:54 #25
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June 21st, 2026, 06:48 #26Devotee
- Join Date
- Apr 2019
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Ok so it sounds like the steam version of FGU is already updated to a native apple silicon version and there just might be an old binary reference. I installed the beta 27 on my ‘5 Mac mini and was met with that pop up about Rosetta.
As for performance I’ve been running FGU on an M5 air 10/10 with 24gb of RAM and it’s been fine. Grant it its been in client mode but I I haven’t had any adverse performance.
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June 21st, 2026, 08:42 #27
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