Longer time to start a game is not too important, what's minute or two if one is going to spend hours playing game ? What's happening during the game can ruin enjoyment if it stops or slows down while loading maps etc. With such high resolutions and large maps developers can't count on systems to have 64 or 128GB of RAM so often accessing disk only way.
Quite true, the initial startup of a game isn't to important that it goes faster than expected as long as the gamer gets to see something being loaded and images or at least some intro scene coming into render speedily, besides that I have played around a bit with where on witch drive my game content plays from and the results are quite differentiating.
One of these is pc game called hitman, and with the latest version the size of the actual data that the game consist of is 3 times smaller than older versions (160GB compared to 60GB)
When the game first loads a mission, loading goes rather quick to get gaming, but now the thing that one does quite allot in this game if your playing towards certain goals and feats is saving and then when the the play progression does not suit the objective anymore, one has to load a save game to try and better on the play progression in order to reach said feat or goal.
Now having had this game (HITMAN) on my slower drive even thou its an NVMe severely lengthens this save game loading due to that the entire mission data is loaded up again from storage and thus I have opted to have a game such as this on my fastest drive instead for best performance and time saving while gaming.
Another game that has benefit over slower drive is F1, now this game is played in 2160p @ 120Hz and there is this very noticeable strain on the rendered scene (note, I'm not talking about lag or fps spikes or dips in fps) when going around the track fast, and then this strain in the rendered scene is just not there when the game data is played from a faster storage device.
Lastly one more thing I would say at this time is to avoid pc games that don't execute immediately once opened, but besides that one hardly sees them being the popular games now days, so quite easily avoided, suppose the dev's have learned from there past mistakes.
were you wanting some feedback or had some questions regarding this setup or are you just sharing?
you have this listed as a discussion but don't seem to be actually asking anything or really leading any type of conversation.
your desktop icons seem to be quite a cluttered mess without much organization in relation to the games.
very large 2.5" SSDs are much cheaper these days and a much better option for game installations.
Mostly just sharing gained knowledge and hoping somebody else takes the lead on what we can discus, but as you can see I derive my input text from feedback and time played with current setup.
Besides that, You mention that ordinary 2.5" SSD's with large size are becoming cheaper or more affordable, well that's not the case yet here in my country, but when they do I'll be surely looking seriously at replacing my mechanical drive with some large SSD's, I could surely greatly benefit from that additional copy speed.
My desktop Icons are placed according to the order in witch I play these games, and the apps in relation to the order they are installed (with download and setup time in mind) and having made a screen capture of a previous full install before formatting, thus being able to place the icons in the same order as what was pleasing to me before, after making a fresh install.
At this point I'm going to be needing a very much larger than 2TB's movies drive, mine is nearly full of only (1080p's), but for games backup my two 2TB's are not yet filling up, sitting at 1.26TB free and 967Gb's free, but regardless of the free space, like I have stated above they are going to be getting replaced.
Here is some more images:
With some more input we could discus more. (meanwhile I'm getting back into some game, this text is not moving at a fast enough fps)