Here are two most important settings you have to change:
Edit: Be sure to checkout the official Remote Play topic if you still have problems.
Edit : For PSN connection and store problems (it shouldn't affect local remote play), manually entering DNS's may help further. The TKIP to AES change helping connections is confirmed also by Luigi87.
Source-
From 60fps remoteplay thread:
Reminder: The setting can be found in "Power save settings" and not under wi-fi. (Also another mini obstacle no small thanks to the UI team.. You're having wi-fi connection problems and the setting is not found under wi-fi..)
Some months ago, I was having problems, wi-fi was constantly disconnecting, the wi-fi quality bar was low even in the same room... And I even made sure the "use Wi-fi in Power Save mode" turned on, hey, I didn't want Wi-fi to turn off when I close the screen or wi-fi was idle. Right? WRONG. I found out that you actually have to turn that off to fix those problems!
On 60 fps remote play thread, Vashetti reminded of this setting and judging by the responses, I'm making a new thread to let people know of this fix. And till this day, I didn't know why that prefrences meant, until Vashetti pointed out why. Damn it Sony, how can anyone having Wi-fi problems actually figure it out to disable that setting? You either document it well on spot or choose a proper title for it. You did neither.
- Turn OFF Power save settings ---> "use Wi-fi in Power Save Mode" Importance level: Over 9000.
- In your wi-fi routers settings, change your security setting to "WPA2 / AES". Absolutely no TKIP, force AES and AES only. Importance level: Very.
Edit: Be sure to checkout the official Remote Play topic if you still have problems.
Edit : For PSN connection and store problems (it shouldn't affect local remote play), manually entering DNS's may help further. The TKIP to AES change helping connections is confirmed also by Luigi87.
Source-
From 60fps remoteplay thread:
As has already been said, 30fps games benefit from selecting 60fps streaming.
Oh and make sure "use Wi-fi in Power Save Mode" is disabled on the Vita.
Reminder: The setting can be found in "Power save settings" and not under wi-fi. (Also another mini obstacle no small thanks to the UI team.. You're having wi-fi connection problems and the setting is not found under wi-fi..)
It's a poorly labelled setting on the Vita, you'd think it would mean to continue using Wi-Fi in standby/'power-save' mode.
But really, it means to keep the Wi-Fi chip in a permanent low-power state, meaning signal strength and internet speed is much weaker.
Some months ago, I was having problems, wi-fi was constantly disconnecting, the wi-fi quality bar was low even in the same room... And I even made sure the "use Wi-fi in Power Save mode" turned on, hey, I didn't want Wi-fi to turn off when I close the screen or wi-fi was idle. Right? WRONG. I found out that you actually have to turn that off to fix those problems!
On 60 fps remote play thread, Vashetti reminded of this setting and judging by the responses, I'm making a new thread to let people know of this fix. And till this day, I didn't know why that prefrences meant, until Vashetti pointed out why. Damn it Sony, how can anyone having Wi-fi problems actually figure it out to disable that setting? You either document it well on spot or choose a proper title for it. You did neither.