High End Gaming PC for This?

I've recently gotten my hands on a High End Gaming PC and was surprised by how many games actually struggle to run decently using the bells and whistles found at the high-end spectrum. While not all games caused crashes I found that some didn't handle being played at their highest settings very well. This could always be an hardware/driver issue from my side, of course, but since the issues seems to be occurring for some games under some specific conditions, and not others under similar conditions, It seems to me like the issue is with the game rather than anything else.

The 2 items that seems to be causing the most problems for me are:

• RTX - This newish technology doesn't seem to work well for some games as using the highest RTX settings directly impacted the stability of some of the games tried.
• Refresh Rate - Some games gives the option of a higher refresh rate than the standard 60hz but stability seems to be taking a hit whenever choosing anything beyond 60hz for some games.

I would argue that the reason why some games have bugs at the higher end settings is because not as many people play games using high-end parts. Most gamers likely use mid to low range systems and games work fine with lower configurations.

I'm not ruling out the hardware/driver issue entirely. This is my first high end gaming PC and I thought everything would run without any issues. The reality, however, seems to be that high end gaming still has some, different, issues than my experience with lower/mid range gaming PCs.