Windows Standalone: runs slower on HD then on USB memory?!?

Physics
1

Hi!

We have a encountered a strange thing. We have a pretty physics heavy “game” that runs fine as a Windows Standalone if played from a USB memory. But when played from Hard Drive the FPS gets very low, when there are much physx activity.

Can anyone explain this?

Best Regards
Daniel

2

Sounds like you run out of memory and as such it starts to page it to the harddisk, which is why the performance drops if game and page file try to use it concurrentely. when played from usb, the harddisk is dedicated to page file so its slightly faster (at best, harddisks aren’t exactly fast)

3

I don´t think its the memory, If I look in the TaskManager the exe is using 240 mb, if I increase the physics update freq( and get lagging) it´s still uses the same amount of memory.

Or do you mean any other memory restriction in Unity or something?

thanks!

4

Um… this seems really strange. Are you streaming/loading any data from the drive during the game?