Tried 30 during a railyard-terrain pogrom and boy is this a boost or what?!
No stutter, no slowdown, no waiting, nothing. It's like having a 5 year newer new computer.
Atm I have an enemy base to destroy and will try 40, but just seeing the extremely high performance of the 30 setting I already know it will be working fine.
One thought, though: Will the view-range-limits on certain armors (some have 16 day-view-range) have to be adjusted then?