If I may pop in, I just tested Bandicam with 18.104.22.1683, then noticed an Update is available, and upgraded to 22.214.171.1244, testing the No Man's Sky NEXT update from July 24th [I was just thinking of playing this game a bit! heh] and it seemed to work with NMS without issue.
Double-Check that you have the FPS counter selected ("Show FPS Overlay") and/or hit the Hotkey for it to 'force' it to show up, perhaps.
Also, I find that with some games, I have to Restart Bandicam after the game has been started.
» Bandicam is running already
» Start game
= Bandicam not hooking ('seeing') the game
» Close and Restart Bandicam
» Return to game that is still running
= Bandicam is hooking onto the game and records OK
I'm not sure why (as I am not a programmer/developer) but sometimes I have to do this. Then, Bandicam seems to work fine. Perhaps try these few steps. GL with it, maybe that's all it is. HTH
Just adding that I have yes, had to do this with No Man's Sky NEXT as well it seems.
It's not a 'big deal', but I wanted to be exact and add that I do have to Restart Bandicam after starting the game.
("Hope That Helps!") ~ Troy