Codeforces has long queue literally throughout the day now.
The main reason for this are some obvious bot accounts which are just submitting 1e18 solutions a day and ruining the experience for everyone else.
Here are a few of them :
1. imraquibe
2. SJCHSKY
3. drnbrhrdt
4. aftabroushad711
5. ScorpioDaggar

Just look at their submission graphs.

Its so blatantly obvious that these are bot accounts which are just here to ruin the website, and there are hundreds of them.
Kindly look into this MikeMirzayanov and Vladosiya.
I'm sure people can put in a bunch of fixes for this in the comments like limiting submissions to 5 or something for unrated users.