@Kentthegreet1 Thanks for posting this - I made this change and it seems to have solved the issue for me. I have also shared round your "fix" to many other forum posts which seem to relate to the same issue.

@Michaelehowe

Welcome, Sir. Keep sharing to help everyone with the same issue.

@mr600_v1 

Welcome, Sir. Keep this thread up to help everyone with this huge problem. 

Keep safe everyone. 

@schulze 

Sadly, I can confirm that this does not work for me.

Also, out of the blue, the loss of (internal) signal is now getting considerably longer.  From 15-30 seconds up to a minute before (approx), to now well over 3, 4 and even 5 minutes.

As before, 3G, 4G and 4G+ signals were tested independently and were strong and constant while MR600 dropped the signal entirely

It is really annoying.

@Guillaume_1978 

Me too, I still have the same problem. I enabled IGMP Snooping in the Advanced tab but it changed nothing. Previously I had switched off the Smart Connect setting and use only the 5GHz wireless band BUT that also did not work out very long.

Has anyone tried another router that really work?? I'm getting fed up with TP-Link...

@Guillaume_1978 

Have tried the firmware that supports manual selection of Band? 

@KIMWW 

Tenda. It has a bandwidth manager per device. Tplink has only prioritization in group mode. 

@Kentthegreet1

I'm using the the beta firmware "Archer_MR600v1_1.1.0_0.9.1_[201204-rel66940]" which supports manual selection of Band. It got a little better but did NOT fix the issue of dropping connection.

Have you tried Tenda routers? If so, does it fix this issue permanently?

@KIMWW 

Not yet since the issue was resolved. However, I am planning to expand my network but no way I'm gonna use tplink again. I am looking at Ubiquiti and Tenda brand.