Hi again, any feedback will be much appreciated 

@Fae 

Thank you for your reply.

To answer your questions please note the following:

• First of I have the TL-R480T+ v9.0
• Connected to the tl-r480 router are two wan connections from different internet providers. 
• Wan2 is the primary link, Wan1 is the back up link
• When either of the wan connections fails I have to manually reconnect it. 
• Once I connect again either of the Wan connections that is down (and while the other is up which means I have internet access) there is a disruption momentarily in the internet connection of the connected wan (this happens despite of the fact that the back up wan fails which is the most frequent). e.g. just now the wan1 is not connected because during the night the modem restarted and now that I pressed connect the internet (although connected through the primary line) has been disrupted 
• Load Balancing is enabled
• Link backup setup is as follows:
  • Primary Wan: Wan2
  • Backup Wan: Wan1
  • Mode: Failover(Enable backup link when any primary WAN fails)
  • Status: Enable (selected)
• Policy Routing: I have not parametrized (I am novice at this so since it worked I didn't do anything) 
• Firmware version: 9.0.3 Build 20200313 Rel.38262 

My understanding when I bought the router was that that in case of a wan failure the transition would be seamless. In my case if I have a webex or a skype call the connection is dropped and I have to call again. This happens even when I reconnect one wan while the other is already connected. (as mentioned in the 5th bullet above). 

Lastly the average utilization of the router is Memory (average) 16%-20% while CPU 54%-85%, thus I was asking that maybe the TL-R605 would have better performance, provided that is can do similar things as the r480+.

@cTsitouridis 

Any feedback would be appreciated since the behavior of r480+ continues to be the same irrespective of the changes I do in parameterization

@cTsitouridis 

I've just moved from a 470to a 605.  The gains are worth the upgrade.  I tihnk the 480 is slightly faster, but pretty similar.

First, the throughput is better.  The old device was limited by the 100mb/s fast ethernet ports, and worse than that, the max throughput of the device was actually around 90mb/s.  The 605 has gigabit ports, and significantly faster throughput.  Even without hardware acceleration/cpu offload, the box seems capable of 300ish mbits/second.

It's got a 4 core cpu, and my box runs at 2 - 4% cpu most of the time, compared to 40-75% on the 470.

On my 470, it took an AGE to be ready to work again after the WAN state had changed.  The 'upcheck' seemed to hog all the CPU, and stopped the box from routing packets, even if other WANS were up.  This is less of a problem on the 605, as the CPU is MUCH faster.  The faster CPU means that it detects and recovers from WAN state changes much more quickly.

The 605 has incorrect looking stats, and support told me this was due to cpu offloading/hardware acceleration.  On the 605, the CPU doesn't shift the packets between interfaces.  This makes it faster, but does mean the OS can't track them.  Support gave me some settings which affectively disable hardware acceleration, and the stats work great.

For a 40quid odd device, just buy one.

@Fae 

Thank you for the response. I have already checked the Load Balancing but also the link back up. 

The issue I have is that once the secondary line drops and comes back the R480+ does not connect. 

I have change the parameter in :

Transmission-> Load Balancing -> Online Detection to always online but I don't think it will do much good.

The last think I will do is change the router of the back up line incase there is something going on with that. I have a spear Tp Link so I will use that one. 

@Portal 

Did support give you a way of disabling the hardware offloading when in standalone mode? Would really appreciate the option to do so!