Userbenchmark is a joke. Literally it's only use is to identify something that is GROSSLY out of whack, and usually when that's the case it's pretty obvious already. I don't see anything in that userbenchmark data other that is grossly out of whack, and even if there was I'd be very skeptical to have any faith in it anyhow.
What are your full hardware specs, with exact model numbers, including motherboard, CPU, graphics card, power supply, all drives, case, CPU cooler, case fans and case fan orientation for each specific case fan location (Meaning whether that fan is oriented for intake or exhaust)?
If you are uncomfortable poking around in services, then don't. You can create real problems in there, although, if you know what you are doing there is little danger. It's not being familiar with which services are core or required for specific programs that could be a problem. And, for most users, if there is a need to do that anyhow then there is probably a need to do a clean install just to clean up all the accumulated cruft anyhow.
Also, you SHOULD be making regular backups of the entire OS image regularly to a location other than your primary OS drive, and if you do that, then doing a clean install brings no possibility of losing something because it will be right there in your backup to grab it from. Macrium reflect and Acronis true image are the two programs I favor for creating regular system backups. If you are unfamiliar with them and have no other software you use for this purpose, you should familiarize yourself with at least one of them and start using it regularly. Not doing so will result in people pointing and laughing at you when (Not IF) at some point your system craps the bed and you lose everything that wasn't backed up elsewhere.
And this goes for more than just the primary drive partitions (Operating system and EFI/Boot partitions) as well. If you have important data on one of your other drives and that's the only drive you have it on, you're being foolish, because real life isn't like the movies and if a drive fails it's HIGHLY unlikely you will be able to recover ANY of the files on it in most cases. Always have EVERYTHING that is vitally important to you stored in at least, AT LEAST, two locations. That was you always have two copies of it in case something happens to one of them.