flickering page when number of transactions fluctuates
The section "Recent operations: Live network" changes size based on the number of transactions, this causes the page to jump up/down based on the number of transactions in the previous ledger.
I would recommend picking a size (let's say 20 transactions) and have a fixed area for transactions (displaying empty space in that area if there are not enough transactions).
It's not about the number of transactions (we always display last 20). It's happening because summary of an operation sometimes takes 2 lines (instead of 1):

We have another task to update the list of recent operation every 10-15 seconds instead of real-time as now. The flickering will still be there but won't be happening that often. We may also shorten long summaries.
Yeah slowing the refresh rate doesn't seem to be the right fix... if anything I prefer it to move more. That said this is a policy choice.
All we need is to get a fixed width & height for that area, then the policy on what to display can be adjusted over time.... If we need the extra data, maybe a more horizontal format with scrolling may be more appropriate in the future