Played Horizon 3 for the first time in ages today, just to see if it felt different than H4. Surprisingly it did. Has anyone else played 3 after a long break? I have similar controls for both games but 3 just feels so much smoother to play, the cars don't all feel like they are on a knife edge. I don't detect the same sort of input lag that I've noticed in H4 and the cockpit camera feels more useable. Not only that, but the layout of each car tends to come across in a more believable way. Front engine cars turn in fast and you have to be careful on corner exit not to boil the tires, mid engine cars feel pretty balanced, and rear engine cars tend to oversteer on lift off. I feel like some amount of that nuance has been lost in the 4th game, all the cars feel like more or less the same. I actually wonder if PG simplified the physics in some way for 4. I've been struggling to eliminate high speed instability in the 996 GT3 in Horizon 4 with limited success - unless rear aero is substantially higher than front, the car just wants to oversteer at high speed. In Horizon 3 the car behaves far more predictably, the ass end of the car will come out for sure, but only if you really initiate some weight transfer. I don't know what it is, but Horizon 3 feels like it has a proper physics engine at work under the hood, where 4 feels strangely contrived.
(Tangent: I really do wonder if they changed something fundamental on 4. One thing that persistently annoys me is that AWD cars tend to feel more stable than RWD cars
at all times. Now I appreciate that AWD cars will tend to be more stable while accelerating because there is more traction available, but it certainly feels like to me that AWD cars are less prone to oversteer in Horizon (especially 4) while under
steady-state cornering loads, which shouldn't be the case. So many things about the way cars feel in Horizon 4 makes me think that they are assigned handling traits with grip multipliers (the ratios of which cannot be altered with different tires) rather than any robust physical differences between cars. What I mean by that, and this is pure speculation, is I wonder if PG has a base car model that they tweak with weight, power, and grip values/multipliers to achieve some facsimile of a cars handling characteristics, rather than have fully detailed physics models for every individual car. For instance, to go back to the 996 GT3 in 4 - it doesn't really feel rear-engined - it more feels like it has been arbitrarily assigned a low amount of rear lateral grip to give
an impression of rear-engined tail sliding during cornering. It actually feels more like how I would expect an unloaded pickup truck to drive on snow/ice...or an early Audi TT,
known for the high speed instability because of light rear end. It's hard for me to square that car's behavior with its actual configuration, unless something is contrived or they simply nerfed it somehow. I've harped on that car a lot, but there are plenty of others that feel unreasonably uncomposed within the Forza engine.)
In addition to the controls handling, the engine sounds are a level above in 3 versus 4. I've gotten so used to 4 that hearing 3 was actually surprising. There is so much detail in all situations - I particularly noticed the fidelity of the audio at low RPM and low load states, and the overrun sounds great as well. In Horizon 4, even the cars that sound broadly correct, the audio seems to be squeezed into some low bitrate file as well as filtered in unpleasant ways. Try driving the 997 GT3 RS 4.0 in Horizon 4 and then immediately boot up Horizon 3 and drive the same car. The difference is pretty remarkable, and that's a car that Horizon 4 gets mostly OK. The H3 version of the car just sounds so "full" and powerful. You can hear a lot of complexity in the sound. In H4 it's kind of all mushed together even if it sounds mostly correct.
Even the visuals in Horizon 3 seem a bit sharper. This is less obvious than the other two I mentioned above, but it somehow feels a little nicer to look at.
The big downside, of course, is that the Horizon 3 map/environment is a
total snooze fest. There is not a single stretch of road that I find enjoyable on that map. It's a huge disappointment. It's a shame Horizon 2 is no longer available on XBL, because it seems like it would be the best of the 3 for me.