Why did the mouse start to move badly?

Question

Regular Expressions

Hello! Guys, curiosity tormented me ... I have 2 computers and, accordingly, 2 computer mice. Both are laser. The whole thing is worth it on an old Soviet glossy table ... Well, varnished one, on which parents cover every new year)
So, before these two mice ran perfectly on this table without any rugs. The cursor did not twitch, did not skip, everything moved smoothly. And now, after some time (maybe after a year or two of use), I suddenly notice that they stopped driving normally. The cursor twitches, moves in jerks, or does not stand still at all ... In the end, the mice worked great on the newspaper and even on my hairy leg, but they didn’t want to do it on the table anymore ... I had to buy a rug. And today I am faced with a similar situation with another person - there was also a mouse, there was also a table, only more modern. Before, everything was running great and then it suddenly twitched ... What do you think it could be? Does the lens get tired there or the legs are erased or the table is polished by hand? ) I'm not joking, the question is serious)

Answer 1

Final regular season:
https://regex101.com/r/9hfuzi/2/
In it, only group 2 is replaced, so use preg_replace with a mask.
$replacement = '$1ЗАМЕНА';

Answer 2

I give

Answer 3

You need to stick new teflon legs.
This is a common operation, once a year it is worth doing.
For professional mice, this is a consumable.
www.razerzone.com/product/accessories/mousefeet

Answer 4

In the optical system - dust, lint, hair.
Clean.