Hi @bhavbhumi
In general, all forums run “cleaner and faster” when fewer plugins are enabled.
My suggestion is to just avoid plugins unless you have a clear use case for a plugin and to keep your forums as “lean and mean” as possible.
Many people fall in the habit of installing way too many plugins; so unless you really have a need for a plugin, do not install “for the sake of installing”.
Here is our snapshot of plugins:
We only show “who is online” to trust level 3 and above (to minimize load). We use the official Discourse bbcode and solved plugins. We also run a lightweight plugin related to our legacy forum migration (and are the only site to run this, I think, since I wrote it only for a specific purpose). We also run the official Discourse sitemap plugin.
That is it.
Hope this helps a bit.