Wow thanks for all the info!
Another thought of mine is that wireless devices can perform poorly if they are too close to the AP. (Like less than a meter)
Huh, I wouldn't have thought of that. I'm pretty close! I'll try moving it a bit further away.
Mesh networks can perform poorly for applications that are sensitive to latency and jitter. (Such as steam’s remote play)
Last night it was much more stable, I didn't have any Steam dropouts (only the BG3 crashes which seem pretty common in Act 3 after having none until then, and I'm not the only one). But I do have the option to create a separate non-mesh network from the AP if I need to. If I have further trouble I'll give that a go.
It’s possible that some of those are related. My assumption is that there’s interference from your own devices and the neighbours. But a mesh network isn’t an ideal environment.
When I changed the channel, the whole lot came with it, hence my assumption.
Two issues here: Issue one, BG3 itself crashes all the time. This most likely isn't linux related, because it's been rock solid up to Act 3 and everyone across all platforms complains about all the crashing in Act 3. Solution - quick save all the time.
Issue two, sometimes Steam Remote Play will disconnect from the game. The game continues to play on the remote PC but the connection is lost, and it won't let me reconnect (which is something Steam normally lets you do, but this might be because it's a non-steam game).
Your info on wifi networks to prevent the connection dropping has definitely been relevant and helpful!