If you play at very low resolution and/or low settings, I suppose the R5-230 1GB would be OK.
Here's a video of a R5-230 but with an i5-650 (more CPU than you have). CS:GO is an easy game to play with low end hardware. The GTA games on the other hand, are heavy on the CPU unfortunately for you. I wouldn't worry about CPU bottleneck. If you wanted to eliminate bottleneck 100%, you'd have to settle for an even weaker card.
Myself, I would go with a GTX 1050 and forget about bottleneck.