I'll be upfront. I play on an old PC. It's got a Q9650, overclocked to 3.6GHz, which puts it's single-threaded and multi-threaded PC Mark score at 1,500 and 5,000 respectively. Those figures are actually respectable, considering. The CPU was the cream of the crop in it's day. Other parts of the PC have been upgraded, GTX970, SSDs, and so on.
I usually avoid Cyrodiil altogether. It's fine off-peak, but bigger battles cause framerates between 10 and 20. I like playing in IC anyway. Lately, though, fights in IC are becoming a problem as well. 2 allies, 3 opponents, on a flag with 3 NPCs, and the framerates aren't exactly in the dumps, but the game stutters. Just now someone incapped me, and I'm lying flat on my back, not able to get back up and avoid my death. For all I know the game / server is running smoothly, but I have no idea of the timing of events anymore. I need the feedback to know that my break free, bar swap, Healing Ward, and so on, has succeeded.
What has stopped me from upgrading is that everyone has these issues at times. Do you think they are always down to server / network lag, or could my old CPU be a contributing factor?