Battlefront 2 PC crashes to desktop

Hi, i'm kinda new here, so bare with me.

I found a tip on youtube from neoDefective regarding the crashing to desktop of Battlefront 2.

I've got A overclocked 1660TI and have been able to play Battlefront 2 without any problems

until i formatted my hardrive and reinstalled everything with new drivers and so on.

Every time i started the singleplayer part of battlefront 2 i was able to play Max 2 minutes

sometimes as low as 2 seconds before the game crashed to desktop.

i saw found out that the game ran at about 140 Fps and the memory of the graphicscard was Maxed out .

neoDefective from youtube had found out that via Rivatuner you could set the frame limit max Fps to what ever you would like.

I adjusted it to 60Fps and then the game ran without any problems. after that i've cranked it up a little a time

Here is the link to youtube https://www.youtube.com/watch?v=iSb6MHth5BA

My question is just, why has this become a problem, it haven't always been like this. i've played the game before without limiting the frames.