8 Team League has 18 Game Seasons?

I always start leagues with 8 teams and expand the league after every few years.
In F21 & F20, the league started with less games (I'd prefer 10, but I think it was 14). When I created a new league in F22 the season is 18 games long.
Also, I tried to sim the whole season and it got hung up on week 18 with 95%.
This is just a sandbox league so there are no human controlled teams. Just want to see what the league would do on auto-pilot.
Also, I can't set the practice squad to zero, so each team has one player on the practice squad which seems silly.
In F21 & F20, the league started with less games (I'd prefer 10, but I think it was 14). When I created a new league in F22 the season is 18 games long.
Also, I tried to sim the whole season and it got hung up on week 18 with 95%.
This is just a sandbox league so there are no human controlled teams. Just want to see what the league would do on auto-pilot.
Also, I can't set the practice squad to zero, so each team has one player on the practice squad which seems silly.