I don't think the issue is with your router. If it were then the incoming would show false. If your router understands upnp then manual port forward is not necessary.
Perhaps b/c you're not sharing many files is why you didn't have anyone uplding at the time.

It's rather normal for downlds to dip. It can be affected by many factors such as what's happening at the other end ... not from your end. Sources is probably the issue. Searching the topic again can help to find more sources. And choose those with 4 stars & many sources under the # column. Having people upld from you can help your results.