My game crashes after adding civs

[AlastorTSGW 12]

I keep trying to add civilizations to my game (PC, Steam) and I use the legit process, (Add Flag, add Tag, add correct info in Language file). My only issue is, if I add more than around 10 civilizations like this, it causes me to crash when I hit the play button (shown in picture). I can still edit/make scenarios, edit map stuff, add formables, and do everything else, but I can't actually play the game part of the game. If anyone has a fix or any info I'd greatly appreciate it!

[AlastorTSGW 12]

1 minute ago, AlastorTSGW said:

I keep trying to add civilizations to my game (PC, Steam) and I use the legit process, (Add Flag, add Tag, add correct info in Language file). My only issue is, if I add more than around 10 civilizations like this, it causes me to crash when I hit the play button (shown in picture). I can still edit/make scenarios, edit map stuff, add formables, and do everything else, but I can't actually play the game part of the game. If anyone has a fix or any info I'd greatly appreciate it!

I would also like to mention this screenshot was taken on mobile, and is not connected to the version having issues, I just used it for a quick example.