Yes, once the CRT filtering looks the same and you’re seeing the plain bezel with no reflections you did it correctly. These shaders are a bit GPU intensive, however in the next update performance is supposed to improve significantly.
There are 2 other tricks you can use to squeeze out some better performance though.
The first is to use a lower desktop resolution than your native resolution and just use a preset that is optimized for that resolution. So for example, if you had a 4K screen, you could have lowered your desktop resolution to 1440p or 1080p and use one of the corresponding shader presets for the lower resolutions. (PVM Editions work fine at either 4K or 1080p and there are optimized ones for 1440p). So in your case you can also try my CyberLab Mega Bezel Death To Pixels Blending and Transparency PVM Edition preset on your 1080p display. Just edit the base preset in the same way. It should actually be the same Arcade Sharp base preset you already edited I believe so you wouldn’t have to change anything.
The second is to look for an older version of HSM Mega Bezel Reflection Shader - version 9.21 to be precise and use that instead of the current one because the older one is measurably faster than the current version. Older versions are available on HyperspaceMadness’s GitHub page I believe. The information on how to find it is the first post of his shader thread.
If you want to use a different version then be sure to rename or delete the other bezel folder.
You can also combine any or all of these methods for a cumulative effect.