I made a new save file in the 'unstable' version and the lag seems to be gone in that one area. I tested it with all three robots and I made my way to the end of it without noticing any issues.

I also talked to the robots, assuming you mean the one on the cliff and the one which refers to itself as a 'calculator bot' and it worked fine (though there is a typo where the calculator bot says 'equiped' instead of 'equipped'). My only issue with them is that you can only talk to them by pressing Enter, but I had been interacting with the terminals, teleporters, and the Explorer Mind by pressing up so I didn't even realize that you could actually talk to them until now. Would it be possible to allow players to interact with them by pressing up as well as Enter?