Yesterday I reinstalled Windows 10 (Home Edition), updated the drivers, and installed the program. I have two monitors, and I use this program while gaming to dim the second monitor so it doesn't distract me with its brightness. This is a huge benefit, which is why I use Display Fusion.
And when I play (in particular in Counter Strike 2) and turn on the fading of the second monitor, an input lag appears in the game (CS2) (the effect of the enabled vertical sync)
I didn't have this problem before reinstalling Windows. What can I do? I understand it could be some hidden Windows setting I'm unaware of. Or it could be a new version of Display Fusion (I'm not sure I had the latest version before reinstalling).
Please help. This is literally the only thing I need this program for. And what I encountered is terrible and will probably make me stop using it.
I will also attach the L1 level logs.

upd: I tested another screen dimming program in exactly the same way. I have the same problem there. So, it's not Display Fusion, but Windows 10 (the official version from Microsoft's website). I don't know what to do.

22:27 enable fade
22:29 disable fade
22:31 enable fade
22:33 disable fade

When monitor fade was enabled, the game showed input lag, as if i had turned on vertical synchronization (V-Sync) - but in fact it was disabled, since screen tearing was still visible.

I apologize for blaming your program, because i tested two other programs specifically designed for screen dimming, and they produced the same effect.
Surprisingly, on the same computer, with the same configuration, the same Windows was reinstalled (but on a different SSD drive), and something happened that had never happened before.