I've been using Warp on and off since it got released and I was under the impression that it was Electron-based as it didn't feel as responsive as iTerm. At one point, with just one open tab (in the early days), it was using over 10GB of memory, but I will definitely give it another fresh try.
Thanks for calling this out! Yeah we unfortunately had a memory issue early on with loading fonts that would cause memory in Warp to explode. This has since been fixed and memory in Warp should hover around ~50-100 MB.