Are all other dependencies the same? It is possible the issue with slowness/root cause is else where cause by the upgrade which is causing the timeouts/ThreadInterruptedException.
Here is an example of similar errors/issues but was something further down. Are you using this for just one service/queue or do you have many queues? Are all slow when underload?
My mistake, this is error from the RabbitMqWorker as @mythz stated. Is it possible some other resources are not being disposed of causing this issue? If you can isolate the issue to a reproducible project, we can test and help find a solution.
Also, if you are able to share any code related to what is being processed, post it on a public GitHub gist/project, and we can review to point out possible root causes.