Okay, I know I am jumping in a little late in the game here, but here is my 2 cents worth.
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1) The TSR-310 cannot handle a lot of network chatter.? An easy way to tell if it is getting overwhelmed is to SSH into TSR-310 and issue a few console commands.? If you find it is sluggish to respond, well there is your indicator that it is overwhelmed by network chatter.
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2) The TSR-310 seems to attach to the first AP it sees rather for looking for the AP with the strongest signal.? I've seen it attached to a very distance AP when there is a AP less than 5 feet from it.
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3) I had recently had a job with an existing TSR-310 with firmware v2.001.0134.001 and added another TSR-310 with firmware v2.001.0186. The one with newer firmware had issues with taking 30 seconds to reconnect to the WIFI if it had been left off dock for a while even though the release notes for v2.001.0186 says it corrects for slow reconnect issues.? I landed up downgrading the firmware to v2.001.0134.001.? It has been a few weeks since I did that and, at least so for, haven't notice any reconnect issues. I am keeping my fingers cross that this fixed the issue.
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4) The "wifisetup forget" command may take a day before it actually stops connecting to the old SSID.? That makes it very difficult to see if setting of a separate VLAN/SSID for the TSR-310 actually makes a difference.
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In the end, I am landing up creating a single SSID that all the TSR-310 connected to, putting that SSID on its own VLAN to reduce network traffic, and limiting the SSID to just a few selected APs so the TSR-310 won't attempt to connect to a weak AP.? And I am not using the latest and greatest firmware anymore until I can confirm that firmware is stable.?
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Of course, forget about putting the TSR-310 on its own VLAN if you are using Crestron Home.? Your only hope here is to putting the entire Crestron system on its own VLAN along with anything that Crestron Home needs to discovered such an Sonos.? Then enable IGMP snooping on your switches and APs to help cut down on network chatter.
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?While I love the TSR-310, it is crazy that I have to jump through loops to get them to work properly.
