docs(self-hosted): specific note on why it's happening

Author: aldy505

develop-docs/self-hosted/troubleshooting/sentry.mdx

@@ -21,7 +21,7 @@ If you're seeing a higher incoming traffic load, then it's expected. If this is
 
 However, if you have very low incoming traffic and the CPU/RAM constantly spikes, you might want to check on your `top` (or `htop`, or similar) command to see which process are taking the most resources. You can then track down the corresponding Docker container and see if there are any logs that might help you identify the issue.
 
-Usually, most containers that are not a dependency (like Postgres or Kafka) will consume some good amount of CPU & RAM during startup. If they are experiencing a [bootloop](https://en.wikipedia.org/wiki/Booting#Bootloop), it usually comes down to invalid configuration or a broken dependency.
+Usually, most containers that are not a dependency (like Postgres or Kafka) will consume some good amount of CPU & RAM during startup, specifically for catching up with backlogs. If they are experiencing a [bootloop](https://en.wikipedia.org/wiki/Booting#Bootloop), it usually comes down to invalid configuration or a broken dependency.
 
 ## `sentry-data` volume not being cleaned up