Hi @shrey-42 - it might make more of a difference than you think, as I believe @MutedJam found an issue once where the Set node needed to be used to properly clear the memory versus a Code node. If that’s still happening, I’d need to let our engineering team know - and if it isn’t happening, it rules out an older issue resurfacing 
I’m not too sure on your update re: the Postgres node, but it might also be worth digging into, especially if the Set node workaround trick fails.
Edit: Found the thread!