Performance question H264 vs DXV for 5-10min HD videos

[Gigasaurus]

I recently started using Resolume to play HD videos behind our band during live performances. The first show went well. The videos are 4-8 min HD videos and vary in filesize from 500MB-1GB. A show involves about 30 songs. At this point I have been using H.264 videos. Since then I have been made aware of the DXV codec - I am exploring using DXV videos instead of H.264. When I exported a 5 min video that was 600MB as H.264 using the DXV quicktime codec, the testfile.MOV I made was 3.5GB (roughly 6 times larger). This was not a surprise. Before I dive too deep into this, I wanted to ask if anyone understands the performance implications and could share some wisdom with me. The laptop is a decent PC laptop (https://www.amazon.com/dp/B0CRDWY96X?th=1). I store the videos on a USB-C Extreme Pro SSD.

My question is: does the larger filesize DXV videos make sense for improved performance for triggering thirty 5-10 minute HD videos, or is the DXV performance improvement really designed with shorter VJ loop videos in mind? I of course plan to do a lot of testing. I don't want to risk having this fail at a big show. But I'm curious if what I am attempting is pushing the limits in terms of performance, or is this the sort of thing people do all the time on a laptop like the one I have. I do not layer videos or use any Alpha channels. i just trigger one video when a song starts. The videos are precisely synced to the music, so I really want to minimize latency or performance issues.

Any advice is appreciated.

[Zoltán]

mp4 was designed for forwards playback, at nominal speed, like streaming.
At any other use case, all keyframe codecs are better.
DXV and prores are all keyframe.

The videos are precisely synced to the music,

How?
SMPTE, or do they have the audio track or a click track?

If you expect to have to speed up the clip or use SMPTE to get in sync with the band, I'd go DXV.

[Gigasaurus]

The drummer uses a click track to stay synced.

So our videos will always be forward play, and no scrubbing or manipulation of playback speed. We start the videos on the first downbeat of each song.