In general the performance boost on PC was the most important “feature” in Update 5, it was literally a game-changer for me (too bad it didn’t affect everyone).
I was worried about the game performance at Nordschleife but it runs smoothly and looks really well (despite things like wrong curbs) so I can finally stop crying about barebones track list in the game (but keep them coming please, many must-haves are still missing) 
As for cars:
- BMW M2 '23, Porsche 718 Cayman GT4 RS, and Porsche 911 RSR '74 were brilliant additions alongside Nordschleife (although the latter came with rubbish settings and needed some serious tweaking).
- Too bad we didn’t get any new Mercedes for AMG Showdown, there are plenty of existing models to return from this brand (especially the AMG CLK GTR). I think better choices than RS 7 '13 and 911 Turbo S '14 could be made also for Audi and Porsche.
- I like Trans Am cars from the Car Pass, no other game I can think of has this class (not even iRacing). I just wish they had separate division so that I could easily run races using only them.
- Lotus Type 35 is another brilliant classic car, now I’d like to have Porsche 804 back to put it against something on fairly similar power level
- But there is also the 2020 Audi TT RS… I have no idea why was this car added to the game alongside the nearly identical 2018 Audi TT RS, especially as DLC content. Any returning FM4-era car would be much better, even Smart
All in all it was a decent update and with fixes introduced with Update 6 I’m once again starting to feel really optimistic about the future of Forza Motorsport. Keep up the good work, T10 