Do you have multiple WANs? You have the tools to manage your traffic across the links.
Since you are having congestion issues, perhaps you should decrease the configured upload speed to 90% of the capacity for each WAN. Then setup someoutbound policies for port 80 to use the “least used”.
You should also set up your user groups and put some upload bandwith limits to keep one device from consuming your total capacity. I put all of my devices as either guest or staff (managers cannot be throttled). I leave the manager group empty except for a couple of devices (because I dedicate an entire WAN to it during certain times - so I don’t care if it uses all the bandwith).
Since the manager group is empty, reserve 10% of your bandwith for them (that will keep all clients restricted to 90% - which should leave room for your web traffic). You can split the staff and guest at 45% each, or set it how you want. The idea is to reserve enough bandwith for your other traffic.
These settings should really help your situation, but you have to do the work to identify and manage your network traffic. Put an outbound policy for YouTube.com and your phot upload sites - make sure that they are never on the same WAN link, etc.
Now that the technical stuff is out of the way… you are free to have your opinion. You are free to express your opinion. Just a little advice though - don’t dog on a product to a forum that supports that product. You will get better assistance with less badmouthing. The product is really good and once you are familiar with its capabilities, I think you will find that it is one of the best commercial grade routers you can buy. Eventually, Peplink will implement better QOS and possibly some SQM, maybe layer 7 recognition. Right now, their bread and butter is with multi-wan, central web-based management (inControl2), and PepVPN bonding. They do these things very well. It was never advertised as a “lag” or “congestion” killer. Though, with a little effort on your end - it can do a good job at eliminating lag and managing congestion. I truly hope that you eventually start to love your router - it is a good piece of gear. Post back if you have any specific questions on how to best handle traffic scenarios.