Has anyone found all the cans?

My frame rate is horribly low, the game basically works in slow-motion, even if my pc meets the minimum requirements and I set the graphics options to the minimum. Has anyone else the same problem?

I am not sure if this is a "lost in translation" issue, but I don't quite understand the ending text of Ending 1. Whose POV is the ending text? It is certainly neither the protagonist (delivery guy) or the landlord. Could that imply Kouhei is innocent, and there is an actual killer hiding in Room 404? But what is "landlord's passbook"?...

1. 502 cat girl she gave me cat food but she still hold cat food in her hand 2. Red sequence: you can pick up 202 package on the ground once you deliver it 3. Mainmenu language missing bug 4. You can get stuck in the trash next to delivery truck If there are other bugs comment below...

srsly wtf