I have TS installed on a HDD as I have almost 400 GB of files in TS folder and the loading time is not too long as I do not even see the winning pictures in the starting screenwhen I start a new scenario. Where do you other people have your TS installed?
I've always heard SSD was better for playing routes as it decreases the famous "tile stutter" that occurs at certain points when driving.
I have TS on an M.2 drive which is essentially a faster SSD. I have very little "tile stutter" as mentioned above. However, the M.2 drives can be a little pricey if you have a lot of content to hold. If you can afford it and your MB has the connectors for M.2 they can be a worthwhile addition.
I have my OS on an SSD and TS on a Seagate Firecuda 2TB hybrid HD which they say was designed for gamers. It has a very small SSD to put your most-used files on which is done automatically. Having a decent CPU also eliminates the tile stutter. I found this out when I upgraded a year ago from an Intel i5 2500K CPU to an Intel i5 10600K CPU.
I have it on SSD. I used to have really bad stutter on my overfilled Samsung SSD, so I purchased a really fast m.2. My first run was excellent, then after reboot, it's fairly stuttery but not terrible. I recall some people juggling DLC to fit the game on a smaller space. Nobody really needs 400 DLC installed at once. (I don't juggle.) I guess it depends on performance, Windows itself has a few services that try to predict usage and cache your files. Introduced with Vista, it is awesome when it works well. Even the heaviest route is a few gigabytes so it shouldn't take long to fully read into memory and then reuse from there. I find the main culprit with my disk isn't the drive itself, it could read 150 MBps and write about half as much, however when copying a game the other day it got down to 150KBps (!), I was fairly certain some protection and caching systems got in the way.
i have ts on my Samsung 870 ssd and it runs good. but i always wonder would there be performances increase on m.2 or nvme drive.