Nice bit, I was just in that part too. I like using these kinds of jumps in normal traversal too, to climb up places faster without the hanging on and climbing animations, just hop up. Was the other part with the pressure plates opening the gates with levers inside and what not always so strict in the timing, it took me several tries to just barely get in the last one. I guess already this early in the game you have to master the rules of the controls/gameplay to get by (or maybe the 60fps somehow messed up the timing of that stuff?). On to Palace (of? missing typo since the 90s?) Midas.
I'm pretty sure the original PC release also has water distortion similar to this (also absent in this remaster), at least in one of the 3D accelerated versions, unless that was a modification by the folks who made the modern Tomb Raider patches (not Open Lara, that has different shader based water).
You can see it
here and in other random playthrough videos though it's not easy to know which exact version folks are playing I guess, but it's clearly not Open Lara or console versions and it's an old school effect rather than something modern. DF retro's Tomb Raider episode sucks about this stuff.
Edit: wops, that is using an older version of
TR1X (renamed Tomb1Main) so I guess we know what version and that's indeed a reimplementation of the engine in open source format so I guess it has things the original didn't (like the braid) but I l read the changes and it doesn't mention distortions...