I found it very enjoyable. Does a good job of capturing the soul of the 80s.
The only minus here is the UPlay-thing.

Fun game, good performance (600+ fps RTX 4070 at 1920x1080)

Very hectic shooter with excellent performance.
Though the soundtrack is mediocre.

Set a framerate cap as this will have some glitches at framerates above 60 (120 is totally playable with minor issues).
Great atmosphere, graphics and performance. Also works fine with an XBox 360 controller, despite it not being listed on Steam.
The multiplayer portion is not available anymore, so just skip the PunkBuster installation.

If you feel motion sick you should probably disable vertical look under Options > Input > Preferences.

On a technical level it's cool to see ray tracing done in real time, but that's it. The visuals to performance ratio is atrocious. And considering that there's no dynamic time of day or destructible environments in the base game this isn't a good tech demo as pre-baked lighting would've largely achieved the same results with much better performance.

There's some cool stuff, but the lows are so low that I cannot recommend it.

1. The amount of iframes when rolling is now determined by the agility stat, which is increased by levelling ADP. This change is not explained in the game and there's no way you'd figure that out without reading a guide.

2. The arena against the boss Mytha is filled with poisonous water. In order to have a chance here you'll need to get rid of the poisonous water. The way to do that is complete nonsense: With an ordinary torch you must set fire to the metallic axis of a windmill.

3. The game is very much based on you getting overwhelmed by too many enemies at once. It also means that most areas are more difficult than their actual boss fights.

Way too many cutscenes.

I think the best use case for this program is to go from 60 fps to 120 when either a game has an engine cap, a CPU bottleneck or is too demanding on the GPU. You don't want to use the frame generation on a base framerate lower than 60. Set a framerate cap either within a game or through the nVidia control panel.