1) For some reason, my PC won't connect to 2.4Ghz, although all my other devices have no issue using the 2.4 (Edit: after restarting, it now connects to 2.4Ghz, at Rx/Tx 2 Mbps / 5 Mbps...Yeah, you read it right.
2) I checked wireless log and Rx/Tx is 81/600Mbps. So it seems only download is...