I keep lagging? how to fix? (pc can definitely run this)

So, when i try running the game, i get about 10-15 fps with grass off, i tried updating unity, game booster, over 5 browsers, heres my system specs: Windows 7, radeon 5450 i7 2600 3.4 ghz, 64 bit, 16 gigs of ram, why cant i run this game? everything is minimum

I think its happening to everyone.

I run it fine, probably time to upgrade that 5450. That’s pretty ancient…

can’t afford it, otherwise i’d have a much better pc.

Its the fancy grass that kills my FPS.