I wish I found this out on accident but to tell you the truth it took me over a week straight of fiddling with Ubot and trying different things out. If you want to create a bot with HTTP Post there is one known way to reduce memory - HTTP Clear Objects When you call this node you will see that the memory consumption is greatly reduced, however there is one more node that I haven't see anybody talk about. Even when I Google it there is almost no mention of this node. I have not read every single post in the HTTP Post sales thread so maybe somebody mentioned it but I don't think anybody h