>>310245232
If the software you're using is using TCP/IP protocol, then yes, every package is ACKnowledged regardless of whether or not you're wired or wireless. Wireless connections themselves have their own error handling methods which are completely independent of the data going over them.

Most games use UDP or some other protocol that doesn't wait for ACK packets because games are very time sensitive and waiting for ACK packets takes too long. Instead, most games just do the best they can with the packets that they do receive.

>>310244805
Depending on the amount of data that needs to be squeezed though the wireless video connection, the compression can indeed cause significant overhead. The HTC wireless adapter will seriously tax your CPU to make sure it can get crisp video to your headset and you will see that video compression quality drop if your CPU gets overburdened.