I currently have an ASUS VW266H as main monitor and an AOC i2260PWHU as vertical second monitor both connected to dGPU, I plan to replace the VW266H, maybe with a freesync model, but from what I read, it seems that Freesync don't works with a second monitor plugged in both to dGPU.

I can't find any source that clarify what happens when a Freesync monitor is attached to dGPU but the secondary monitor attached to iGPU, should it work?

Does anyone know if Freesync and Multi Monitor is a big no no despite any effort to make it work?