Many problems with this game and they only seem to keep getting worse with every "update"
It's very boring overall, that much should be very well known by now, but the biggest pain is that most of the new cars added with updates (3 or 4 at a time every few months) are totally rubbish, which also doesn't help when the weekly races usually have 1 or 2 races at a time that forces players to buy/upgrade the trash new cars to play those races or be somewhat competitive.
Weekly races can also tend to be bugged either by messing up the rewards, fixing races with broken/OP AI racers, or making the race entry requirements way too restrictive (such as 1 model only, especially as it can sometimes be a model with virtually no performance upgrade options)
Also the pp restrictions change with almost every update to force players to downtune their cars just to keep playing the races they used to.
Only 2 decent races to grind with the right set-ups but it always feels like a soul-crushing slog just to get through them.
Steering/handling with controllers is also broken due to the lag between steering with a joystick and the response of turning the steering wheel in-game.
Very poor range of tuning options that don't affect pp ratings which can lock them out entirely for some setups for certain races.
Summary: way to take an otherwise much beloved racing franchise and completely suck the fun and joy out of it, Sony.