Clock cheaters

Cheating by clock is much too easy here and too common as well. And don´t tell me that it is impossible to cheat with the clock.
The live server keeps the official clocks and the client clocks are updated after each move by the server. If you see clock changes it's due to lag, lag compensation, or short disconnects.
https://support.chess.com/article/423-why-did-the-clock-times-suddenly-change-the-clocks-seem-broken

As @Martin_Stahl notes,
Maybe you were thinking about FICS. Lag switches are used there by a lot of players.

I reviewed your last game. Your opponent had 1:39 left on the clock when you timed out. They managed their time better than you.

Cheating by clock is much too easy here and too common as well. And don´t tell me that it is impossible to cheat with the clock.
1. It is impossible to cheat with a clock.
2. The clock is an intimate object. It has no concept of time or cheating.
3. Time is a man made conscript.
4. Take it up with Kronos the god of time.
A clock is not intimate, not in my world anyway
Cheating by clock is much too easy here and too common as well. And don´t tell me that it is impossible to cheat with the clock.