Cypress performance issues

Since about version 4.11 our cypress has become insanely slow. It hogs network like crazy [any page I’m trying to load, like this github post is taking forever when tests are running] Failed video compression takes AGES it logs progress every few seconds, and all I’m seeing are 1-5% increments in that time

Started processing:  Compressing to 32 CRF
    Compression progress:  8%
    Compression progress:  16%
    Compression progress:  22%
    Compression progress:  27%
    Compression progress:  32%
    Compression progress:  37%
    Compression progress:  40%
    Compression progress:  44%
    Compression progress:  48%
    Compression progress:  52%
    Compression progress:  56%
    Compression progress:  60%
    Compression progress:  63%
    Compression progress:  67%
    Compression progress:  70%
    Compression progress:  72%
    Compression progress:  74%
    Compression progress:  77%
    Compression progress:  79%

Typing has been insanely slow as well. Tests in general got exponentially longer. Is it only our instance or did anyone else experience it? I’m not really sure where to look for a fix for this. Anything you guys can point me to would help! thanks! Also: headless seems to be WAY SLOWER then the non-headless, which is already really slow. All in CHROME - electron doesn’t seem to be affected by this.

Versions

4.11, 4.12

[nicolajv]

After some research it looks like this issue started in 4.9 and is related to asset requests being cancelled and retried a bunch of times. We see it in the dev console on both electron and chrome. Downgrading to 4.8 or using Firefox we do not see this issue. I replicated the issue in a test in this repo: https://github.com/nicolajv/cypress-chromium-issue

[srdjanprole]

This is a huge problem… with cypress 5.0.0 we have like 2k requests and with 4.8.0 we have like 100 requests…