Can you please enlighten me what else other than IPC congestion can be the cause of your latency and throughput issues? Why are there latency issues every single day until you throttle certain protocols (you refer to it as "shaping") for the general users?
I'm on the business package but every time I read this forum I empathise with all the Afrihost users here that are not getting anything close to what was promised initially nor what they were getting two months ago. In my books that's a bait and switch tactic and it's not moral and also something I expect from other providers and not you.
Spikes in demand cause the higher latency, which in turn will affect throughout. Again, we cannot link this directly to our capacity as we've seen a whole stack more software updates roll out. Seeing such a drastic change in user and content delivery patterns isn't the easiest thing to anticipate
I see you're also posting in the Business thread. Let's keep your posts there as you have a Business account with us. Also makes it easier to track