For Focusrite Scarlett Solo Gen 3, I don't find it usable for recording at all.
The Latency is high, because there is a Safe Mode enabled for the ASIO Driver, and without it, you can't reliably record at low buffer sizes. This Safe Mode increases latency.
One thing you can do is bounce the sound down and then record over a reference track - with all of the non-reference tracks disabled (Virtual Instruments, Plug-ins, etc.). That makes things easier, and you may be able to turn off safe mode and go down to really low[er] buffer sizes.
Personally, I only use mine on a secondary PC Laptop that I never record on. Otherwise, I take an AudioBox 96 or M-Audio AIR 192|4 with me and record through that. Those devices are stable, have lower latency an can run at lower buffer settings that allow tighter recording without the issues that Focusrite has. I can also record through my Maschine MK3's interface without issue. It's really the Focusrite that is problematic. I don't know the technicalities of it.... but I'll never buy another one of their interfaces again (although I do like how tiny the Scarlett Solo 3rd Gen is - so it's a nice "travel" interface),
I am not sure if the 4th Gen Focusrite Scarlett devices have fixed this.
