Originally Posted by Soapy

Rear end spinning out entering :-
To solve try below

More front neg camber
Less toe out at the front
Longer camber links
thicken front diff.
heavier sway bar up front
More brake bias towards front of car
More anti Dive

Rear end spinning out exiting

Less anti squat
Thinner centre diff
thinner rear diff (will increase corner entry steering though)
Thicken front sway bar
More rear Toe
Longer camber Links

Its all a balance and changing something to help one part of the car can create handling problems in another area as you've found out trying to make your car handle the bumps better

So it's always good to see and think about what will improve my car everywhere and not a setting change that is always a compromise. Most of the time it is, but it's all about getting the happy medium.