Alternative to Rendering 4K for High Resolution Display

Hello,

It takes too much space and memory to render 4K video from Unreal Sequencer. However 4K is necessary because the video will be played on a large screen at an event. Is there an alternative to rendering 4K? I read something about HAP playback support for Unreal, is this a solution? Are there any other solutions?

I render at 2880 x 1620 when I do heavy raytracing renders
so that’s better than 1080

this is only for pictures, but there may be some upres video apps as well