A few days ago I was prompted to update Synapse, including a reboot for a driver update, if I’m remembering it correctly. Later, when I went to play a particular game through Steam, it started immediately crashing on launch. After trying several things to fix it, I remembered the Razer update. After quitting out of the Synapse app, the game launched without issue.
Going through my library, I found four games that crash immediately on launch when Synapse is running (with or without any devices connected) but work fine if it’s not. The games that are crashing are Epistory, Kind Words, Kind Words 2, and Squeakross, and the only thing I can find in common between them is that they’re all built with Unity, but other Unity games I tried work fine.
[I’m on an M1 MacBook Air running macOS 26.2 and Synapse for Mac 4.0.86.2601140839 with a Basilisk V3 Pro.]
On a positive note, hiding Synapse from the Dock finally works! Yay!