Essentially Ublock has a lot of filters that introduce lag which is the reason for the title of this review. However, Ublock in the described configuration (not default) + Ghostery is the best you can get.

Now unbeknownst to most, the greater the filter list especially above 100k total, the more the slow down. For these two reasons my filter list is as follows:

My third Filters are:
Ublock Ressource Abuse
Malvertizing filter list by Disconnect (4918)
EasyList without element hiding rules (32805)
Adguart English filter (10559)
Total: approx 50K

As opposed to for example, EasyList which by itself is 75K + all the others you would add on so most users are in the 100K spectrum which affects their performance. The multipurpose and privacy filters introduce further lag. For these reasons, Ublock should not be used for privacy. Instead I use ghostery because it properly handles the privacy without slowdowns. Combined and configured as above, these two are the Top Gun Tank that every user should hire. Its interesting that all the freedom of customization, for most users, will usually lead to unnecessary lag and slow down even with the default filters.