Hello btsync community, I have a very weird bug by using btsyncclient on windows 8.1 on a local network. When I use a custom made fullscreen app, it doess flicker to black several times every roughly 10/15minutes, which makes it impossible to use it. That disappear if I close the bittorrentsync client. Any clue or advises to fix this problem ? Here are the details : # Conditions ## Hardware Local network 192.168.0.x/24 11 computer with static IP : 192.168.0.x 255.255.255.0 *Gateway blank* computer : HP Pavilion 23-p010 All-in-One Desktop PC with Windows 8.1 1 router and switchs 10/100/1000 1 bit torrent sync server on a Synology NAS ## Software Each computer has a btsync client running synchronized There is one full screen custom app on each computer # Observation Each roughly 10minutes the screen does flicker (black frame blink during 3 seconds) on all machines It does not flicker if the application is not full screen # Tests If btsync client is closed on every machine, the flicker disappear By checking the network we found out that there is a stream/flood of SSDP request coming from each btsync client, wich is a local discovery network and that seem to cause the flicker screen - We tried to block this request in firewalls and windows services - We tried updating windows -> Nothing worked # Conclusion We had to remove bittorrentsync of all our computer to be able to use them normally with fullscreen applications, which is very annoying.