I am also having this issue. Mostly when pressing the keys: e, i, s, and space. It’s really not helpful when trying to learn how to program. I have tried a new USB port, removed and cleaned those specific keys/switches (helped temporarily), and deleting and re-downloading synapse. Nothing has permanently fixed the problem. :( It makes me feel less crazy to see everyone else having the same repetitive keys. It takes twice as much time to type anything since I have to go back and correct frequently. Do not recommend.
Same issue. I am annoyed.
I have the same problem (BlackWidow V4 Pro)