Beware the Sulfites. Sensitivity to sulfites is common among asthmatics. For me, an allergic reaction can result in a severe asthma attack. Dried fruits are usually responsible for the reactions. As with all processed or manufactured food items, I consistently check labels.
In some rare cases, dropped frames can be caused by an old network adapter driver doing a poor job of handing the high speeds being consumed. It's not a bad idea to just check to see if there are any new drivers for your network adapter, just to be sure.
1 You can drop all your stones without opening the menu to speed up the process, but if you drop stacks of items Dyna & Tillo will reject them.  When trading large amounts of trading items (20 or more) at a time, the frame rate can drop significantly (on consoles).