[cloud_firestore/deadline-exceeded] Deadline expired before operation could complete.

[Tom3652]

Hi everyone,

I am sometimes seeing this error when running a transaction :

[cloud_firestore/deadline-exceeded] Deadline expired before operation could complete. 
For operations that change the state of the system, this error may be returned even if the operation has completed successfully. 
For example, a successful response from a server could have been delayed long enough for the deadline to expire.. 

I am guessing that this is due to Firestore limitations when it comes to write to the same document many times "fast".
However, there are only 4 users in my app and it's not a spamming button, the query is running only once.
The transaction performs 2 reads, then 1 set + 2 update.

The links i have checked : answer 1 - answer 2

Can someone confirm that this could be related ? Or what it could be ?
This scares me a little bit about Firestore performances...