Neither the snap guide for the node or the snap guide circles can be controlled other than all on or all off.
However you can delay the time it takes for them to automatically appear.
In the Work Environment ...
You can then use the keyboard shortcuts to force them to appear so you don't have to wait for the automatic time allowed.
So set it it for 2 or 5 seconds or longer.
2 seconds is probably not too long to wait for the automatic placement (I am happy with 1 second).
If you don't want to wait but you do want the guides, use the keyboard shortcuts.
One of the forum moderators.
Versions 6.5 to 25
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Dell Precision 3510 - i7 6820HQ @ 2.70GHz, 16GB RAM, AMD FirePro W5130M, Windows 10