Raspberry continues to freeze

[crik91]

Hi, I have a Raspberry Pi 3 model B.
It worked fine till one month ago but now continues to freeze. Is there a way to determine the reason of that freeze?

What I've done:

• Update
  Clean install (here worked well for 2 days)

I don't know what can I do to understand which is the issue. Maybe the MicroSD card broken, a broken Raspberry or something relative to software, configuration, ecc... I think that I need to do somthing or check some logs. Sometimes also via SSH needs much time to execute some command.
It seems slow, also in boot, reboot or in use. But after a clean install is all working fine and fast.

Thank you in advance.

[johnvick]

Maybe try a new SD card if you haven't?

[crik91]

I actually have one.
I uninstalled Transmission and everything seems to have returned to normal(fast as normal). But after many tests even with a clean installation, it seems to be a problem related with Transmission, I don't know why.