It's not unusual for a semiauto .22 RF, especially a brand-new one, to have some functional issues with some brands or types of 'standard' velocity ammo. Many owner's manuals will include a note that recommends using 'high-speed' loads for best reliability of function.
This may often become less frequent once your rifle is 'broken-in', and will sometimes disappear entirely. The upside is that bulk .22 HS is usually both easier to get and cheaper than most SV loadings. Most Wally Worlds will have a brand or two of the former at <$10/500 rd. carton.
IIWY, I'd just put a couple of bricks of the plain vanilla HS stuff through my rifle to break it in and see what happens. I'd bet that, from your somewhat vague description of the stoppages, the SV loads just don't generate enough 'oomph' to cycle the blow-back action completely. As your recoil spring gets some use on it, it may lighten-up enough to compensate for the lesser energy levels.
FYI: The Aguila load you mentioned is really considered to be in the "hyper" velocity category rather than 'high-speed'. The accepted figure for a loading to be considered "standard" velocity is a 40 gr. bullet at about 1050 f/s from a rifle. 'High-speed' loads using the same bullet weight usually run about 1250 f/s ,with the lighter 36-38 gr. HPs yielding 25 /fs or so more. The 'hyper' loadings really have no 'standard' for projectile weight or velocity, as they all have proprietary differences. Their unifying factor is that they were all developed to exceed the velocity figures of regular 'high-speed' loads, usually by a combination of special powders and 'light' projectiles. Examples would be CCI's "Stinger" and "Quik-Shok" loads listing a 32 gr. HP at 1640 f/s, Remington's "Viper" 36 gr. TC at 1410 f/s and "Yellow Jacket" 33 gr. TCHP at1500 f/s, and your Aguila "Super Maximum" with its 30 gr. HP at 1750 f/s.
If you field strip your new carbine following the instructions in your manual for cleaning, and lubricate it as recommended, most if not all of your problem should pretty much go away. If you try some .22 ammo marked on the box as 'High Speed' after doing this and are still having the same kind of problem give Ruger a call at the CS number listed in the manual. It's highly unusual for a 10/22 to have any chronic functional problems and Ruger has a well-earned rep for making things right if you have a problem with one of their products.
PS: Should've started out by saying that you needn't worry about using any ammo marked '.22 LR' in your carbine. There are standards for dimensions and pressures set by the "Sporting Arms and Ammunition Manufacturers Institute" (SAAMI) which all of the makers adhere to. That's not to say that it'll function the action correctly, just that it will almost certainly be compatible with the chamber and bore dimensions of any .22 RF firearm and not generate pressures above what a modern firearm originally manufactured for it and in good condition can handle safely.