Will a wireless streamer add problems to a signal coming out of a computers USB output?

The streamer can do either Wi-Fi or ethernet. I’m going with ethernet. As far as the connection between the streamer and the DAC, I happen to have an optical cable, so I’m going to try that. Anyone have a point of view about what’s the best way to connect them?

I’m convinced. I just ordered an aes cable. This should complete my system.

it’s a D2 wireless Dac from Audioengine that has the ability to take a USB input from my computer and send it wirelessly without using the DAC to an optical input on a Denafrips Pontus 2 that goes to a musical fidelity A308 integrated to Atc scm40 speakers . The D2 sounds remarkably good for its price, but it was time to upgrade. I’m confused as to whether or not I need a streamer for my current signal path to be fine or I need to put something between the computer and the dac to make it fine. Any help at all would be appreciated.
 

I can accept what people are saying. I’m actually contemplating a Simaudio’s Moon Mind 2 streamer, which of the ones in its price range seems as though it would serve me best. I had thought I would try a piecemeal approach where I ordered the Pontus2 first and experienced how that improved things, and then add the streamer if necessary. What I’m hearing is that it is totally necessary if I want to get the benefit of the better DAC and fully utilize my great speakers. So perhaps my experiment is doomed because I will have spent a bunch of money on the pontus, which is in shipment, and I won’t be able to tell how much difference it makes because the signal path will still be crappy in front of it.

Does this line of thinking makes sense?  I have some extra money right now and don’t mind putting it toward upgrading as long as the upgrades will be quite noticeable. My wife especially doesn’t like spending money unless there’s a good bang for the buck, and she needs to be able to hear the difference; she does not have audiophile ears. Maybe some of you can relate to this… 

I took a leap by buying  a streamer to add to the dac I just bought. Thanks for all the help.
 

My streamer has three outputs: SPDIF, toslink, or balanced.