PC Peripherals Razer deathadder auto movement issue

My mouse(Deathaddder essential) kepps on moving itself(jumpy). it majorly keeps moving to top left corner of the screen.

I would like to know what thing is at fault here and if it is possible to repair.
I have checked that it is not a driver or virus issue.
I like the size and grip of this mouse

Also, can someone suggest a good budget repairable mouse with atleast 3 buttons.I can do soldering if needed.
I like to keep things as long as possible and not contribute to ewaste problem.

I don't do gaming.
I like the size and grip of this mouse.(Don't like small mice)

chyawanprash said:

Disassemble the mouse and clean it thoroughly. The sensor, prism, etc. There would be dust and tiny strands of fabric stuck in the rotary encoder too. You'll need a magnifying glass or mobile camera to spot them as they are almost translucent. You can use IPA 99% and a flat paintbrush (number 8 to 12) to clean these tiny areas. If you are comfortable with opening up the switches, then do so and clean them too. They can be tricky to reassemble. I generally douse the switches and rotary encoder in electrical contact cleaner.

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Do you think cleaning will resolve the mouse moving to the top left corner on its own issue? I can understand cleaning can help with double clicking and irregular scroll wheel issues.

I used cleaning to get rid of scrolling issue problem some months back but not sure about this one. But will try it anyways.

chyawanprash said:

Happens with me all the time. If I don't clean it properly then the issue returns in few days. Last time I washed it thoroughly with soap and water.

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Thank you brother. Cleaning it seems to have sorted the issue.

Still wondering why cleaning worked. But happy that it worked.