It's a little tricky. This version of Crysis 1 is definitely the best performing, but there are some caveats: there is evidence of lowered enemy counts as compared to the original PC release (this is due to this version being based on the console release instead of the original PC release); vegetation and certain object no longer react to explosions (unlike the original PC release); vegetation physics, when shot by bullets, animates at a hard capped 30 fps (it may actually be lower), many of the original PC version's volumetric effects have not been restored; much of the actual game and AI logic are still highly single threaded; the general color grading and lighting style of the game has changed, which causes some of the source art (especially for characters) to look worse at times as they haven't been redone to look good with the new lighting and color grading; I believe leaning is still missing; and there are a bunch of other minor features that are missing compared to the original PC release.
With the above being said, this current version of the port is at the point where it plays well and consistently performs much better than the original version. I think buying this version is fine, it's just not exactly equivalent to the original PC release of the game yet in terms of features. Not sure if the team plans on addressing every issue though, but they seems to still be committed to improving the Remaster.
