It appears after December update that there are less machines to engage. Too much time is spent looking for machines. There used to be be fun aggregate areas like Osterviks but now hard to have some heavy fighting. Gets boring trying to find them. Add more machines please.
Check my guide
It´s the best we can get for the moment.
Besides the link given above, you’ve also asked the same thing in here: Change to spawn rate?
Cross-posting the same idea (for additional exposure) is not the way how we do things here.
Topic closed. 
//Mod