Sunspear

Yeah sorry I read your first sentence and just wanted to be a contrarian :D I agree with the rest of your comment though after reading it, it could be made a bit more concise with more or less the same effect

I'd take a shot at super speed, I feel like simply saying "but your physique stays as-is" would be enough of a limitation with the following notes:

• You can decide to speed up your perception and run up to e.g 20x your base speed. That would make a 6 km/h walking speed into 120 km/h. Maybe we can do 50x and then it's 300 km/h.
• Your body experiences the physical task as if you did it at base speed. You exercise for 10 minutes, the physical toll is 10 minutes, even if you sped yourself up to 50x in that timeframe.

In one second, you could zip through 80 meters just by walking, quick enough to be super useful, but still possible to counter since you will get tired after a while

Hmm it's not that useless, imagine doing parkour stunts where you can stop time each fraction of a second to judge where you need to move your arms/legs.

Or coming up with the perfect riposte for a negative comment from someone :D

I second the miniPC suggestions, I have a Dell Optiplex 9020M (bought used for about €70 some two years ago), put an SSD in it plus 8 GB RAM, and it handles anything I throw at it (minus real-time video transcoding).

I use it in a headless way, so YMMV with the video displaying part, but I doubt a Pi would be stronger in this regard.

In any case, I think it's worth looking around before committing to a Pi, these micro pcs are quite convenient to carry/store/service, and they are self-contained unlike a Pi.

https://www.servethehome.com/introducing-project-tinyminimicro-home-lab-revolution/

Here's the article that started me down this path ^

Edit: I see you're more into electronics, and I don't know much about GPIO on these machines, so the laptop may be the simplest solution then - in any case, it's nice to have options