After packed to pc,frame rate is lower than in editor

Unity Engine
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1

In editor fps is 50~60,after apcking is 30~40.

How to get a same fps as in editor?

2

Perhaps you’re running the game at a higher resolution than in the editor and it’s limited by your GPU performance?

3

THX. I Tried set quality to “very low” , close editor and resize the game resolution,the fps just raise to 44. I think Maybe I messed up the editor settings.