[Sohcahtoa82]

If you're using reddit on mobile, use any app besides the official one. Personally, I use Bacon Reader.

If you're on desktop, use the old reddit layout, and install RES if you can.

Nearly every complaint I see about reddit's UX is because of people using the official app (Seriously, how is the official app the worst one?) or the new reddit UX.

As for Twitter, I've never felt its website or app to be slow on mobile.

[bee_rider]

I think most people use the reddit website.

If you have to download an app to use what is fundamentally a website, that website has failed miserably.

[yissp]

If you access the website from a mobile browser it will nag you at every opportunity to switch to the app. It's quite annoying, so I wouldn't be surprised if most people give up.

[frosted-flakes]

There's a button to turn off the nags the menu. I don't think you even need to be signed-in.

[frosted-flakes]

Apps force you into a single-threaded experience, which I dislike. Browsers have tabs, which I like.

[nicce]

You can use nitter instances instead of Twitter. UI on there is super lightweight and usable, something you hope the original one would be. Also you are not distracted by constant popups for logging in.