Good day , I bought a test RB 260GS, set up according to the instructions on the site, updated the firmware 1.10 , everything works well , but there is one unpleasant moment , used wire connection: Switch - Media Converter -mikrotik
screenshots apply settings , if you start to transmit multicast and at this point remotely log on to web RB 260GS it freezes and stops ping but clients work for him (this is when the
Watchdog) if the Watchdog enable the device will reboot at the moment when they try to stop him (this all applies only when passed through multicast 260GS)
So it should be something or the mood is not so ?
And one more question for you may not : use 100mb sfp converters and mikrotik supports only 1000 Are there any plans to implement support for 100mb SFP
with respect Alex
ps: sorry for my english

does not have any ideas, may not have enough performance? or is it a bug?

+1 i have this issue 260gs and 260gsp

have you sent bug report to MikroTik Technical Support ( support@mikrotik.com )?

yes Ticket#2014062066000151