Legion Go Z1E + Aoostar AG02 + RTX 5070 same FPS in 1080p, 1440p and 4k

Hello everyone I have the setup Legion Go Z1E + Aoostar AG02 + RTX 5070 playing Battlefield 6 and The Outer Worlds 2 I get 50-60 FPS no matter the settings or resolution. Is there something I can do to fix? I tried following this GUIDE but no dice

When I get home later Ill post some benchmark results

Thanks!