How to fix this lag in crownfall store only .

[Shinomiya Kaguya]

I can't buy any item in store cuz it's too lagg .I hope anyone can help me .

[Hayasaka Akari]

same

[bebe14242]

in my case, going to Settings - Video and changing from Advanced settings to Basic settings and sliding the bar all the way to the left (Fastest) made the Crownfall map run perfectly smoothly.
Just make note of how your Advanced settings were before, because once you switch back you will have to manually choose all the extra stuff (like whether you want shadows, or animated portraits, or tree movements and so on), Dota does NOT save them.