That's for newer AAA games. Games with simpler or more optimized graphics, especially those running in emulators, tend to do really really well.
I ended up buying one of those Anker laptop USB PD chargers, and they can recharge the Deck twice over, so I could actually spend nearly 8 hours fully utilizing the Deck's power without being tethered at all.
I ended up buying one of those Anker laptop USB PD chargers, and they can recharge the Deck twice over, so I could actually spend nearly 8 hours fully utilizing the Deck's power without being tethered at all.