Missing textures (Forza Horizon 4)

Good day, I will try to describe the problem in detail. I understand that this topic already was, but there I not found all over the Internet too. Attach videos and photos.
The essence of all that is, I play Forza an hour or two, after three or four hours of play begin to disappear gradually the main texture when you quickly go, after begin to disappear textures, stronger and already gets this label low speed transmission" as in the screenshot, but why pause there as written only added that check supposedly your disk or CPU. Also on another screenshot you can see it. When the food well with a speed up to 100km/h then everything is fine but of course not going anywhere, start moving and then start to fall texture. Now the game is installed on ssd features ssd will be lower.
PC new, collected in September 2019, initially the game was set on a train, and I had the same problem, then I bought ssd m2 gigabyte also crashes after and still changed to ssd samsung m2 as well, and such problems continue to occur. PC is not overheating, all temperatures in norm, in other games this is not observed, no missing textures, no freezes, no lags, nothing. all games are on high and ultra, ultra Forza too, and just tried high and medium and low and this nonsense continues. I hope that has not forgot to describe, said, like everything. Characteristics PK - PERC: 5 ryzen 3600x, mother: Gigabyte x570 elite video: MSI GTX 1660TI, RAM 32GB hyperx ( previously there were 16 GB of Corsair and it was the same ) ssd m2 which is game: Samsung EVO 500GB 970 Plus. read speed is 3500, the write speed of 3200. Windows 10.
Railway if that the usual 2 TB Toshiba. There is another samsung ssd but the sata speed on it much less. Already tried to reinstall, and ssd change as mentioned earlier, and on the other to install, and completely clean and install a new, lower settings, look for network problems and all without success.
Please tell me what to do? how to solve this problem? because the game is smooth and fps on ultra from 100 to 150 reaches, well, sometimes 200, if the schedule to accordingly lower the fps increases.