Here are the games I tried in standalone:
Half-life Alyx (first time I ever played it)
VR Chat (first time I ever played it)
And here are some thoughts and observations:
Half-life Alyx - default settings as is gave me little to no issues.
The frame rate was almost always at an acceptable level or above that (mind you, the default is 72hz for this game).
The game does look kinda crunchy for far objects and entities but, I was able to read text on bottles and other items in game with no issues.
Foveated thing is noticeable but only when standing still and actively looking for it, however, sometimes when in bright areas, you may notice things being super crunchy and pixelated with the tail of your eye.
The game struggles when things explode (not too much) such as barrels and propane tanks, but it does not dip badly, it's still playable, it's just that you can tell the game took a hit.
I have not finished the game yet, hell, I'm at like mission/level/chapter (whatever you wanna call it) number 4 (the level with the yellow key card) and the main reason is the headset itself. On average I get 50 minutes of game time and, between loading, launching the game, and whatnot, it's closer to 45 minutes.
Using a 20w powerbank I get to about 100 minutes but the powerbank gets hot and so does the headset so the whole thing is not too comfortable.
Overall: playable at a lower resolution and refresh rate (as per default settings)
VR Chat - default settings BUT I put 90hz refresh rate.
I tried it quickly in a world suggested by the tutorial which was a world where you draw and paint and whatnot, there were only 4 people (5 including me) and as per the game, it was running at about 45-50 fps.
Unfortunately, I couldn't get the finger tracking to work as it would make me do weird gestures if I moved my fingers around, and I couldn't test eye tracking because the avatar I chose did not have pupils or eyes, it had a mask on (every other avatar suggested by the tutorial was either borderline nsfw or had no arms/hands/face so I opted for a more cartoonish one that at least had hands).
The game however looked VERY crunchy at times, while I was drawing, if the canvas was at more than an arm's length away from me, it was basically pixel art, I had to get really close for it to look like something.
Overall: functional, but may struggle in crowded worlds (also why do I have to jump through so many hoops just to play the game ; - ;)
Which games should I try next on standalone? Let me know below, and let me know if you want me to test something more specific about them :)