Gemini 3.8 in Antigravity is too slow!

Google Antigravity
,
1

I’ve been using Antigravity 2.0 daily for months and it’s usually blazing fast, but since yesterday the response times have fallen off a cliff.

There are no crash warnings, rate limits, or error codes—everything technically works, but the initial TTFT (time-to-first-token) is crawling. Even saying “hi” in a brand-new, empty chat hangs for an abnormal amount of time before the agent starts writing.

Is it just my connection/region, or are others seeing backend throttling today too? What’s going on?

2

The same problem, but Gemini 3.7 works stably and quickly.

3

same issue. It’s slow and can’t execute simple tasks (or takes insanely long).

4

for me , Gemini 3.7 flash has the same slow response too

5

3.6 is faster, still slow for me

Screenshot 2026-09-15 at 9.55.06 AM
Screenshot 2026-09-15 at 9.55.06 AM1071×626 60.4 KB

6

All Gemini models seem unusually slow for me right now. I’m also repeatedly hitting the “Our servers are experiencing high traffic right now” error, along with very high TTFT before responses begin.

7

same issue from yesterday, the team were sleeping from able to solve the issue , why they were isnt posting publicly regarding this issue even people were complaining about this issue globally.

8

Using 3.8. today is very very slow.
not sure about other models.

9

A lot of model not available bacground retries happening which is making every slow..

10

Same. It took 20 min to sync google tasks to my obsidian. It used to take like 3 min.

11

It was working so well. Now 2 nights trying to make steps forward but its really slowing me down. This is the error:

{
“error”: {
“code”: 503,
“details”: [
{
“@type”: “type.googleapis.com/google.rpc.ErrorInfo”,
“domain”: “cloudcode-pa.googleapis.com”,
“metadata”: {
“error_number”: “2010”,
“model”: “gemini-3.8-flash-medium”
},
“reason”: “MODEL_CAPACITY_EXHAUSTED”
}
],
“message”: “No capacity available for model gemini-3.8-flash-medium on the server”,
“status”: “UNAVAILABLE”
}
}

12

3.8 is slow from today evening but 3.7 is working well

13

I was developing a game engine with Gemini 3.8 Flash-High. It was very fast and stable, and 2 days ago I had that server error notification, and after that day it’s very slow. Even can’t do some simple stuff and have a lot of bugs.

14

3.8 has been very slow for the past 2 days. Tested now 3.7 and it’s working well

15

Hey All,

Thank you for bringing this to our attention. Our engineering team is aware of the situation and is actively investigating the performance degradation with the Gemini 3.8 Flash model.

As a temporary workaround while we work on a fix, many users have found that switching the active model to Gemini 3.7 Flash restores normal execution speeds. We appreciate your continued patience as we work to resolve this and enhance the Antigravity experience.

16

Yeah Gemini 3.8 is super slow, but also Opus 4.6 constantly gets terminated

17

I think it might be fixed to normal speed again?

18

I tried with new chat right now and It seems fine

19

@mark14 @RD1,

Yes, this issue has been resolved.

Thank you everyone for your patience.

20

This is awful. Gemini has been super slow since yesterday. It feels like I’m using Codex instead of Antigravity. HEY, GOOGLE DEVELOPERS, FIX THIS PROBLEM. WHY DID WE CHOOSE YOU? FOR YOUR FAST SOLUTIONS!