Check out an alternate web client, like https://github.com/spikecodes/libreddit. Even compared to the old design it's much more lightweight and clean, and compared to the redesign it makes 1/4 as many HTTP requests, uses 1/20th the CPU, 1/4 the memory, and 1/2 the bandwidth, doesn't require an account to subscribe to subs, can work as pure static HTML, and doesn't track anything. I have poor Internet and the difference is night and day.