You should report an issue with your specs, not just say “other applications don’t have this problem” — especially as a Linux user.
For one, not all applications are GPU accelerated.
Two, their UX may need to be improved for a specific hardware configuration. I have used Zed with good performance on Intel dGPU, AMD dGPU, and Intel iGPU without issue — my guess is a missing dependency?
Meh, it's not worth the trouble. I don't care enough about using Zed to fix their Linux distribution problems or debug something for them. This isn't some volunteer backed FOSS project where they get a free pass or free QA work from me.