My first memory leak?

A while back I posted an issue relating toCFThread GC Overhead Limit Exceeded. Someone marked a reply as the answer but the issue is still ongoing.

After months and months of reading and taking different approaches to try and implement a working solution I'm still no further forward.

Most recently I've started trying to use the MAT plugin within Eclipse to determine if I'm encountering my issue due to a memory leak issue, however I do not understand the information that is being displayed to me.

Can anyone analyse what is being displayed below please?

Do I have a memory leak issue that needs addressed? And is it likely this is what is causing my CPU usage to get maxed out and the CF service (and eventually the system) come to a standstill?