FXAA+Fine sharpen postprocess filter
Testing PC ReShade that combo works nicely with extremely low performance cost. MSAA x4 cost is x3 or more.
Would be a good option for decrease hot in summer preventing overheat issues. Also could give more SSAA.
Working as general option could apply sharpen to streamed & compressed content from PC. Probably internet streams are too much compressed.
Sharpen must have customizable values depending of the game/app.