Was having issues again today, periods of 3-5 seconds where nothing would work,every minute or so, no swapping no firing, crafting pages would take seconds to load ect.
I did try to do the settings tekmaster82 tried but that did not seem to work.
Today Norian suggested he was having no lag at low settings, So I went to low and it seems to have helped alot.
I also happened to remove 15 different active trade and other channels, which of the two did it for sure I am not certain, but these issues were going on all over ark today and were very frustrating.
They now seem largely gone, hoping it stays that way. Hope this helps someone else who might be as frustrated as I was earlier.