Oh, is that what the issue is? I've seen the "flicker" thing as a meme, but as someone who uses Claude Code I've never noticed. I use ghostty mostly, so maybe it's not an issue with ghostty? Or maybe I just haven't noticed it.
Happens with Konsole sometimes on an 8th gen i7. This cpu can run many instances of intellij just fine, but somehow this TUI manages to be slow sometimes. Codex is fine, so no good argument exists really.
underpowered machines? the only reason it needs "powerful machines" is because it's a shitty react app in the terminal. I've never seen anything else flicker like that. it's not like it's running the llm on the "underpowered machine".
kilocode runs fine. opencode runs fine. qwen code runs fine. what exactly is Claude code doing that requires so much power? I'm sorry but it sounds like you're speaking from the wrong end.