Having the same issue as the OP. I do AI dungeon crawling on the service with a plus plan and can be easily repeatable letting it run a bit where your sitting and waiting for a response where even the browser informs you that the page is frozen waiting on GBT response, the official app is no better and to me even a bit slower than the browser side. Wait time for a response is 3 to 10 minutes for each response and slowly getting worse each reply, even editing a reply is still a long wait. Browser is fully up to day, tried multiple browsers, OS is Win 11, even trying a fresh OS build but still the same issue. Internet is not the issue, 900 down 45 up with only a few items in. Not sure what to do to resolve this slow response time issue. Deleting and recreating the chat defeats the purpose of it’s intended use.