What’s the biggest sign a cash game is unbeatable?

For me, the biggest sign a cash game is unbeatable is when there are no clear weak spots at the table. If every player is disciplined, understands ranges, rarely makes major mistakes, and actively adjusts to each other, your edge can disappear very quickly.
Another warning sign is when the rake is too high relative to the stakes. Even if you're slightly better than the field, the rake can eat up all of your expected profit. A table full of solid regulars plus a tough rake structure is often a good reason to look for a better game.
The best cash game players aren't afraid to table-select. Sometimes the strongest move isn't playing better—it's finding a softer game where your skill advantage is much larger." ♠️💰🃏