We have been noticing some of our apps using an excessive amount of memory. This seems to occur when we use live ticking charts. We also noticed in some instances when we have tooltips, if we keep moving the most over points memory in chrome would also go up drastically.
I cannot post to JSFiddle from this pc so please see the below,
We checked with the code you have provided and we are unable to find any memory leakage. It would help us to check into the issue if you can provide the following details.
1. OS and version
2. Browser and version