Bit of a vague question here but I'll try and explain.

I have an early MY2011 and since moving to a new house I've had doubts about the cars stability.

I live on a dirt track which has some fairly big potholes and the track is generally uneven. If I go over any of the potholes the car feels very bouncy and if I'm not careful I can hit my head off the handle above the door. There's also a bit of a knock (intermittent) from front passenger side if I go over one of the potholes (which is more like a speed bump) at anything other than serious crawling speed.

Is the FL2 a generally bouncy car or should it be a bit more refined offroad? Learned to drive in 2011.
Bought a Micra - great little car
"Upgraded" to Kia Sportage - hated it
Proper upgrade to FL2 TD4 GS 60 reg Facelift - tailgate paint issues, fuel gauge rewire, transfer box failure at 36k miles, clutch at 60k
Reconditioned diff at 70k ish
Sold at 84k and now on a DS. Terribly unreliable.
Sold DS for a 2021 Mitsubishi Outlander PHEV. Fingers crossed....
Sold Outlander for a 2014 SD4 SE Tech because I’m mental

Have you checked the condition of bush's role bars drop links etc especially the side with the knock

Never done this - is this easy enough to do? Learned to drive in 2011.
Bought a Micra - great little car
"Upgraded" to Kia Sportage - hated it
Proper upgrade to FL2 TD4 GS 60 reg Facelift - tailgate paint issues, fuel gauge rewire, transfer box failure at 36k miles, clutch at 60k
Reconditioned diff at 70k ish
Sold at 84k and now on a DS. Terribly unreliable.
Sold DS for a 2021 Mitsubishi Outlander PHEV. Fingers crossed....
Sold Outlander for a 2014 SD4 SE Tech because I’m mental

A search suggests these are easy to find. I now know what the drop links look like am I right in thinking they are connected to the anti roll bar? Learned to drive in 2011.
Bought a Micra - great little car
"Upgraded" to Kia Sportage - hated it
Proper upgrade to FL2 TD4 GS 60 reg Facelift - tailgate paint issues, fuel gauge rewire, transfer box failure at 36k miles, clutch at 60k
Reconditioned diff at 70k ish
Sold at 84k and now on a DS. Terribly unreliable.
Sold DS for a 2021 Mitsubishi Outlander PHEV. Fingers crossed....
Sold Outlander for a 2014 SD4 SE Tech because I’m mental

I must admit every FL2 I have test driven has been a bit roly poly, Im looking to increase the stiffness of the suspension

I live up an unmade road and at certain speeds it is a bit bouncy, normally very slow and worse from the passenger seat, I get an occasional bang on some of the bigger holes, no where near as much banging and crashing as I had with the SF at the same mileage or less. my PC is slightly to the right of Genghis
2012 HSE SD4 In Orkney Grey now gone, best car ever.

Ok that's interesting. I've only got an Audi A4 to compare it to which has much stiffer suspension and is a much lower car. I just think that if you were doing some proper off reading or green laning in my car you'd need a neck brace. Learned to drive in 2011.
Bought a Micra - great little car
"Upgraded" to Kia Sportage - hated it
Proper upgrade to FL2 TD4 GS 60 reg Facelift - tailgate paint issues, fuel gauge rewire, transfer box failure at 36k miles, clutch at 60k
Reconditioned diff at 70k ish
Sold at 84k and now on a DS. Terribly unreliable.
Sold DS for a 2021 Mitsubishi Outlander PHEV. Fingers crossed....
Sold Outlander for a 2014 SD4 SE Tech because I’m mental

20 years ago I had a Peugeot 504, as best as I can tell after this length of time, the Freelander is firmer & rolls a lot less. The 504 was all over the place around corners but it was very comfortable. Procrastination, mankind's greatest labour saving device!

Acoustic insulation ARB TPMS 3xARB air compressors After cooler Air tank On-board OCD pressure air/water cleaning Additional 50L fuel Carpet in doors ABE 2x1kg Waeco 28L modified fridge Battery 4x26ah Solar 120w Victron MPPT 100/20 DC-DC 18amps 175amp jumper plug Awning 6x255/60R18

Trouble is, the ride can be a little subjective. One person's "soft" can be another's "bouncy". We like the Freelander's ride. Maybe the most comfortable we have had for the majority of roads. It can be caught out though. On the downside of a speed bump for instance, the front struts can drop to full extension and give a nasty bang. Answer: don't go so fast! 10MY (Sept 09) TD4 HSE Auto in Stornoway Grey (Now Gone)

08 FL2 TD4 SE Manual in Rimini Red (Now Gone)

Got to disagree with the advice to go slowly on bad roads.

I regularly go down unmade roads, most are distinctly uncomfortable at low speeds, lets say 10mph, the same roads at 30mph, and the FL suspension does an excellent job of smoothing out the bumps, 50mph is still smoother than 10mph, but control of the vehicle is compromised. If you were driving in an expanse were there was no danger of collision then this would not be a problem.
That said I occasionally go down a "road" that the residents deliberately leave in a shocking state - think craters rather than potholes, any faster than 15mph and the suspension bottoms out in most holes.
My advice, if you regularly go down the same route, experiment with a little quicker, you may be surprised. if you are out of control or the suspension is bottoming out (rather than topping out), then you are going too fast.

When it comes to suspension wear, mines a 2008 with 162k, so definitely past the first flushes of youth. Tangiers Orange - gone, missing her
Replaced by Ewok what a mistake - now a happy Disco Sport owner

Interesting about the suspension bottoming out on the other side of a speed bump. I took a look at the main culprit pothole yesterday and it has a real edge on it rather than a slope down, so I suppose it could be like driving off a kerb which would explain the noise.

I would agree there is a real difference between very slow and not so slow. Learned to drive in 2011.
Bought a Micra - great little car
"Upgraded" to Kia Sportage - hated it
Proper upgrade to FL2 TD4 GS 60 reg Facelift - tailgate paint issues, fuel gauge rewire, transfer box failure at 36k miles, clutch at 60k
Reconditioned diff at 70k ish
Sold at 84k and now on a DS. Terribly unreliable.
Sold DS for a 2021 Mitsubishi Outlander PHEV. Fingers crossed....
Sold Outlander for a 2014 SD4 SE Tech because I’m mental

I'm riding on factory 19"s and I can tell you the ride is compliant, smooth and handles amazingly for a 2 ton box onroad and off-road. Absolutely no bounce or instability!
Sounds like your shocks are shot!!!!!! MY15
Tyre Pressure Monitoring System (TPMS)
Surround Camera System
InControl Apps soon to be replaced with CarPlay (WIP)
Meridian Premium Surround Sound
Digital Audio Broadcast
Timed Climate
Cruise ECO Data
Follow Me Home Reverse
Extra Features Menu
Picture In Motion
4x4i screen (WIP)
Digital Broadcast TV
Meridian Rear Media with WIFI
Factory Powered Tailgate
Blind Spot Monitoring (BSM)
Reverse Cross Traffic Alert (RCTA)
Electrochromatic Wing Mirrors (WIP)

I'd be pretty annoyed if me shocks were shot in a car less than 6 years old. Learned to drive in 2011.
Bought a Micra - great little car
"Upgraded" to Kia Sportage - hated it
Proper upgrade to FL2 TD4 GS 60 reg Facelift - tailgate paint issues, fuel gauge rewire, transfer box failure at 36k miles, clutch at 60k
Reconditioned diff at 70k ish
Sold at 84k and now on a DS. Terribly unreliable.
Sold DS for a 2021 Mitsubishi Outlander PHEV. Fingers crossed....
Sold Outlander for a 2014 SD4 SE Tech because I’m mental

Really? On a 4X4 vehicle? Maybe if it's been used exclusively on the road but if it's been used to anywhere near its full capability, I'd expect a fair bit of wear on the shocks. Past: FL2 TD4 HSE Auto
Evoque SD4 Dynamic Lux Auto
Present: Audi A3 S Line.

Although I can't speak for the previous owner, the car has never been offroad with me and only since moving has it been using a dirt track for about 4 minutes per day. Learned to drive in 2011.
Bought a Micra - great little car
"Upgraded" to Kia Sportage - hated it
Proper upgrade to FL2 TD4 GS 60 reg Facelift - tailgate paint issues, fuel gauge rewire, transfer box failure at 36k miles, clutch at 60k
Reconditioned diff at 70k ish
Sold at 84k and now on a DS. Terribly unreliable.
Sold DS for a 2021 Mitsubishi Outlander PHEV. Fingers crossed....
Sold Outlander for a 2014 SD4 SE Tech because I’m mental