Does count of workflows stuck in delayed queue , impact performance of ST2 execution?

[zsmanjot]

I have an environment where we have tons of alerts and those are actioned upon by ST2. But when alert flow is more and we have delayed policy in place , the workflows get stuck in delayed queue and the execution of other workflows becomes very slow.

For example:

And here below one execution started at 19 sept 16:38 UTC but completed at 20 Sept 00:15 UTC

Almost after 8 hours, the execution got completed.

Anyone who can suggest here?