So how does F95 split games work like? Does season 3 ep 11 cover season 1-2? or do I dl season 1-2, play that, then when I finish play season 3? Why not upload the whole game?
The splits are DPC's work. If you're starting from scratch, you need to download "Season 1-2" (Ep 1 to 8), then you'll need to download "Season 3 Interlude + Episode 11", which covers Interlude, Ep 9, 10 & 11, and make sure you keep both installations separated. You'll have an export screen at the end of Ep 8, and an import menu in the S3.
If you need a more visualized explanation, you should definitely watch the video
Better Cock Spock linked in a previous reply to your message

Have fun !