After the faithful Razer Naga 2022, which served for 7 years, died, I decided to replace the mouse. Since over the years I almost stopped playing mmorpg and mostly moved to a laptop, I decided to take a compact wireless mouse, again from Razer. The first few months the mouse worked properly and always pleased. However, after about six months, the mouse began to slow down - during a smooth and uniform movement of the hand, the cursor sometimes gets stuck. The effect manifests itself unpredictably, and at first it did not occur very often, but over time it began to manifest itself more and more often. I tried it on different surfaces, even bought a rug that I never used - nothing helps, Bluetooth / whistle, different computers - there is no difference. If you can still work in office applications (and sometimes it is not easy to get into small interface elements), then it has become impossible to use the mouse in games. Razer support sent it to the store, they "tested" it in the store, the conclusion is that the mouse is working, we can't help. I recorded a video with them reproducing the problem - do not care, we must reproduce it ourselves. Test methodology? We are testing as it should, but we will not tell you the methodology. It's a pity, but, apparently, I will have to look for a new mouse again, and, apparently, this time it's not Razer anymore.