My experience with github is much better though on average. Haven't had a single bad experience personally the past year for my personal stuff. Not once. Github does only one thing, the CI is usually somewhere else so there have less reasons to fail as well... It might be comparing apples and oranges.

We use Gitlab at the office and it is constantly slow. Might be our setup I agree, but in the end it also tarnishes the brand to me.

All in all, my general experience is that speed and stability has degraded over the past years, in favor of the 'whole in one devops pipeline'. Github stayed focus on its core market.