HDMI · EDID and scaling screen

Will both displays accept the advertised mode?

Choose the EDID policy explicitly. A splitter cannot assume two different output modes unless the exact device declares per-output processing.

Two-output plan

Resolution scaling does not prove feature conversion

Some routers downscale resolution but do not convert refresh rate, color space, HDR, VRR, audio capability, or protected-content behavior. Treat every processing feature as a separate exact-model declaration.

Read the routing guide · Isolate a failing output