Well I have slower sppeds since 3.1, also upgraded to 3.1 & firmware 2.12 and also proiblem remains after downgrade.
Maybe you are onto something with your firmware idea. But then again, you upgraded firmware after problem appeared, after upgrade to 3?
Yes, i did the firmware upgrade to 2.12 after having forwarding problems on 3.1 but it didn't change anything. When i wrote firmware i forgot to say R52 firmware. The radios also have a firmware on them. I know this is undocumented but the behavior of my system tells me that this has to be the issue, especially because this new behavior with slow uploads and bridge forwarding problems persist even after downgrading RouterOS to 2.9.50.
I have a customer well known to MT having exactly the same issues, even after downgrading to 2.9.50.
My problem is that i can't document it right away because of this particular radio is 50 meters up in the air, and the windy conditions over scandinavia right now makes it impossible to change the card for some time. Just hope MT finds a solution fast.
Regards
Henrik