6 Degrees Of Freedom heaven
I am no expert at this type of game, but loved the original Descent. Overload has been created by the original Descent team members, and is I think the definitive remake utilising modern hardware.
Currently I am nearly at the end (far more levels than I was expecting) .. On Trainee (the lowest setting to play through the game), and looking forward to trying it on all five of the increasingly harder settings, and maybe having a bit more success with all the secrets on every level.
In terms of patches, I believe its already at the mature stage, pretty much all bugs have already been squashed.
Overload on GOG https://www.gog.com/game/overload
Overload on Steam https://store.steampowered.com/app/448850/Overload/
Discord https://discord.gg/n8Tu3j
Home site and links to Community forum https://playoverload.com/
Reviews on Steam "Overwhelmingly positive"