I installed Mint on an old laptop with low specs and it ran very well in that context. I switched to Manjaro for my main computer because KDE and i have to agree. Manjaroo is also very easy to use out of the box.
I started with Mint because I just wanted it to work right away and it did. But lately I had severe issues with the VPN constantly reconnecting, weird keyboard issues and Teams killing the X session. Although I blame that last one fully on Teams, that fucking piece of shit. Plasma on Manjaro runs so smoothly and I finally have all the latest packages I need, so I'm quite happy at the moment.
Last I remember it was based off LTS Ubuntu editions, so it could fall behind. Was awhile ago since I switched, but I remember having issues getting modern Bluetooth devices working. Had to override the kernel and manually download the chipset's firmware files.